heliooo/variable.js at main · Harikumar2004/heliooo · GitHub

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// varibles & datatypes

//string
var person= "john";
let person1 ="smith";
document.write(typeof person1)
document.write("<br>") //for next line
document.write(person);

document.write("<br>") //for next line
//number
var number = 10;
var number1 = 20.33;
document.write(typeof number)
document.write("<br>") //for next line
document.write(number1);

document.write("<br>") //for next line
//boolean
var js=true;
var html=false;
document.write(typeof html)
document.write("<br>") //for next line
document.write(html);

document.write("<br>") //for next line
//undefined
var test1;
document.write(typeof test1)
document.write("<br>") //for next line
document.write(test1);

//null
var test2=null;

document.write("<br>") //for next line
//constant
const pi=3.14;
document.write(pi);