Skip to content

Javascript

Jump to bottom
Riekelt Brands edited this page Apr 2, 2021 · 9 revisions

Evaluating Javascript

You can evaluate Javascript both with and without callback.

To evaluate without a callback simply call CefInstance.Eval(string javascript)
Example

CefInstance.Eval("window.location.href = 'https://www.google.com/';");

To evaluate with a callback, you can call CefInstance.EvalCallback(string javascript, Action<string> callback)
Example

CefIntance.EvalCallback("window.location.href = 'https://www.google.com/';", (string result) => {
    Debug.Log(result); // https://www.google.com
});

Invoking static classes from Javascript

By default a Javascript object can be exposed to invoke static methods in your static classes.

To get the static method invoker, you need to call CefSharp.BindObjectAsync("staticInvoker"); in Javascript. Now you can call staticInvoker.invoke(class, method, arguments[], callback);.

Note: you will always receive a string result as an argument in your callback, and you can only use strings as arguments. Use JSON for effective communication.

Example

using UnityEngine;

public static class InvokeTest
{
    public static string Test(string arguments)
    {
        Debug.Log(arguments);

        return "Hello from Unity!";
    }
}
<html>
<body>
<h1>Hello world!</h1>
<script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
<script>
(async function()
{
	await CefSharp.BindObjectAsync("staticInvoker");

	var updateH1 = function(result) {
		$('h1').text(result);
	}

	staticInvoker.invoke('InvokeTest', 'Test', ['Hello from Javascript'], updateH1);
})();
</script>
</body>
</html>
Clone this wiki locally