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adding js files.js
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‎1-LJeVeJKqiZ6vlsHKgRdrkw.png

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‎Arithmatic operators.js

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var a=5;
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var b=9;
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c=a+b;
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d=a-b;
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e=a*b;
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f=a/b;
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g=a**b;
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h=a^b;
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i=a%b;
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console.log(c);
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console.log(d);
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console.log(e);
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console.log(f);
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console.log(g);
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console.log(h);
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console.log(i);

‎Comparison operators.js

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var a=4;
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var b="4";
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var c=3;
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var d=11;
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console.log(a==b); //true
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console.log(a===b); // false
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console.log(a>c); //true
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console.log(c>=d); // false
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console.log(c!=d); // true

‎Console.log.js

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console.log("node working");

‎IMG_20191119_015008.jpg

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‎IMG_20200722_172439 (1).jpg

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‎alert.js

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alert("Js excuted");
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var firstnum = 78,secondnum=45;
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var div=firstnum/secondnum;
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alert(div);
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Array[5]={a,e,i,o,u};
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alert(Array[1]);

‎anohter.html

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<html>
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>me.com</title>
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</head>
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<body>
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<p id="demo">
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your function of js appeared here ......
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</p>
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<script src="classes.js"></script>
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<div id="wrapper">JavaScript is fun!</div>
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<input type="text" name="myNum1" onkeypress="numCheck()">
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<input type="text" name="myNum2" onkeypress="numCheck2()">
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<script>
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function numCheck() {
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message("Number: " + !isNaN(event.key));
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return !isNaN(event.key);
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}
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function numCheck2() {
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message("Not a number: " + isNaN(event.key));
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return isNaN(event.key);
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}
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function message(m) {
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document.getElementById('wrapper').innerHTML = m;
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}
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</script>
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<div id = "fit"></div>
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<form action="anotherpage.html" method="get" onsubmit="return msg()">
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<input type="text" id="fn" placeholder="fname" name="fname" />
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<input type="text" id = "ln" placeholder="lname" name="lname" />
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<input type="text" id = "age" placeholder="age" name="age" />
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<input type="submit" value="submit" />
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</form>
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<script>
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</script>
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<h1>
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go backward !
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<input type="button" value="Click" onClick="history.back();">
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you directed to the next Page jani love you</h1>
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<form onsubmit="return checkpassword();">
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enter a password<br>
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<input type="text" id="f1">
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<input type="submit" value="submit Form">
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</form>
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</body>
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</html>
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</html>

‎anotherpage.html

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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Document</title>
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</head>
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<body>
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<div id = "fit"></div>
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<script>
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/** let q = window.location.search;
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let params = new URLSearchParams(q);
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let name = params.get("name");
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console.log(name);
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welcome("welcome here");
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function welcome(m){
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document.getElementById("those").innerHTML = m;
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}*/
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function valFrom(){
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var check = event.target.children;
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if(check.fname.value == " "){
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msg("need a first name !");
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return false;
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}
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if(check.lname.value == " "){
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msg("need a last name !");
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return false;
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}
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if(check.age.value == " "){
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msg("need an age input !");
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return false;
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}
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return true;
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}
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function msg(s){
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document.getElementById("fit").innerHTML = s;
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}
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</script>
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</body>
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</html>

‎arr splice shift unshift slice.js

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var arr=["some","People","have","curly","brown","hair"];
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arr.splice(2,2,"must"); //adding element at index 2 removing index 2 past element.
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console.log(arr);
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arr.shift(); // remove first element in the array
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console.log(arr);
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arr.unshift("yo","man"); // add elements at the beginning of the array
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console.log(arr);

‎array reverse and sort.js

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var num=[12,1,55,05,65,33,14,0,17];
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console.log(num);
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num=num.sort();
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console.log(num); //  [0, 1, 12, 14, 17, 33, 5, 55, 65]
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console.log(num.reverse()); // [65, 55, 5, 33, 17, 14, 12, 1, 0]
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‎array with loops.js

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var arr=["same","casey","Dewayne","Rexha"];
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for(var i=0;i<arr.length;i++){
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console.log(arr[i]); // printing array values one by one
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}
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var arr2=[45,44,45,96,32,1,2,47,58,56,22];
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for(var i2=0;i2<arr2.length;i2++){
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arr2[i2]=arr2[i2]*2;
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}
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for(var j=0;j<arr2.length;j++){
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console.log(arr2[j]); // printing array values one by one
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}
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var arr2=[45,44,45,96,32,1,2,47,58,56,22];
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for(var i2=0;i2<arr2.length;i2++){
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arr2[i2]=arr2[i2]*2;
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}
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for(var j=0;j<arr2.length;j++){
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console.log(arr2[j]); // printing array values one by one
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}
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// check a value present in an array or not searching a number
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var arrayy=[54,44,28,4,6,2,1,3,6,47];
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var searchnum=parseInt(prompt("Enter a number to check "));
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var found=false;
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for(var f=0;f<arrayy.length;f++){
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if(arrayy[f]===searchnum){
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console.log("entered number : "+searchnum+" found at index : "+f);
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found=true;
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break;
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}
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}
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if(found==false){
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console.log("your entered value is not found !");
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}
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‎arrays.js

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var array=[45,33,12,44,11]; //range 0 to -1
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var menu=["sandwich","pizza","french fries","burger"];
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var bools=[true,false,true,true,false];
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var mixed=["hello",45.2,"#"];
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var mixed2=[{sequnce : "mike"},{force : "afterwards 56 "}];
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console.log(array[2]); // accessing array elements
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console.log(menu);
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console.log(bools[3]);
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console.log(mixed.length);
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console.log(mixed2[1]);
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console.log(mixed2[3]); // undefined since the value is not at the given index
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// add update elements using index
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var adding=[];
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adding[0]="a";
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adding[1]="e";
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adding[2]="i";
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adding[3]="o";
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console.log(adding); // all arrays can printed
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console.log(adding=>2);
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console.log(adding[6]); // undefined
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adding[11]="se";
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console.log(adding+" "+adding.length); // directly adding value jumping empty indexes.
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//updating an
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adding[2]="rt";
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console.log(adding);
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// array push
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var pushing=[];
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pushing.push(31);
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pushing.push("hexadecimal");
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pushing.push("somewhat","exactly");
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console.log(pushing);
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//array user input , order shop
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do{
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var order=prompt("what do you want sir select category drink or meal ");
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var i;
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var drink_cost=32;
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var meal_cost=78;
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var items_purchased=[];
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var howmany=parseInt(prompt("enter quantity"));
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var orderagain=prompt("do you want to place more orders: say yes or no");
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switch(order){
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case "drink":
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total_paybill=drink_cost*howmany;
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console.log("your paybill is : "+total_paybill+" each costs : "+drink_cost+"$");
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items_purchased.push(order);
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break;
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case "meal":
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total_paybill=meal_cost*howmany;
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console.log("your paybill is : "+total_paybill+" each costs : "+meal_cost+"$");
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items_purchased.push(order);
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break;
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}
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}while(orderagain=="yes");
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console.log(items_purchased);
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‎assignment operator.js

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var a=5;
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var b=9;
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a*=b;
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b-=a;
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console.log(a);
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console.log(b);

‎async await.js

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/**
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* // EXAMPLE 01
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function greet(x){ // a first function is made
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const myprom=new Promise(resolve =>{ // adding promise with set time out function of 2 seconds delay
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setTimeout(() => {
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resolve("Something will happen as : "+x); // the settimeout body executes afet 2 seconds delay
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}, 2000);
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});
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return myprom // promise object name return
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}
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async function greetcatcher(x){ // async funtion
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const talkout= await greet(x); // greet catcher waits for timout of 2 seconds held off to show message inside promise
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console.log(talkout); // message under await , where await waits 2 seconds for first function called.
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}
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greetcatcher("function called after 2 sec delay !"); // function message print run after 2 seconds.
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console.log(1+"delay break");
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greetcatcher("function called after 2 sec delay second time !");
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console.log(2+"delay break");
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greetcatcher("function called after 2 sec delay third time !");
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console.log(3+"delay break");
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* */
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/** // EXAMPLE 02
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* async function myDisplay() {
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let myPromise = new Promise(function(resolve) {
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setTimeout(() => {
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resolve("I love You !!");
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}, 3000);
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});
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document.getElementById("demo").innerHTML = await myPromise;
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}
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myDisplay();
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*
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*/
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/**
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// THROUGH AJAX CALLOUT OTHER EXTERNAL/INternal PAGES alongwith async and promise , await
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async function getFile(){
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let promi=new Promise(function (resolve,reject){
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let req = new XMLHttpRequest(); // ajax calling
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req.open("GET","index.html"); // giving path and operation to perform on triggered file here open file.
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req.onload = function(){
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if(req.status == 200){
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resolve(req.response);
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}
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else{
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reject("file not availble in the triggered directory !");
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}
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};
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req.send();
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});
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document.getElementById("demo").innerHTML = await promi;
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}
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getFile(); //callout whole function
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*
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*
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*/
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const passtypes =["abc","adx"];
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function checkout(pass){
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return passtypes.includes(pass);
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}
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function login(password){
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return new Promise((resolve,reject) => {
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if(checkout(password)){
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resolve({
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status : true ,
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show : "Logged in sucessfully"
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});
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}
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else{
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reject({
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status : false
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});
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}
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});
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}
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function checkout2(pass){
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login(pass)
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.then(token => {
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console.log("Approve:");
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console.log(token);
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})
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.catch(value => {
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console.log("Reject:");
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console.log(value);
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})
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}
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//var ask =prompt("enter password :");
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const x = document.getElementById("ok");
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var ano = x.value;
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//checkout2(ano);
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