Google-chrome – With Chrome how to use the the javascript: URL pseudoprotocol

google-chromejavascript

With Firefox I can type in the location bar "javascript:" followed by some JavaScript code and have this code executed and the result displayed in the page. For example javascript:x = 3 displays 3 in the page.

However with Chrome nothing is displayed. Is there a way to do this in Chrome?

Best Answer

You could do something like:

javascript:x=3;alert(x)

Or:

javascript:x=3;document.write(x)

At least on Chrome for OS X, neither of these work on the new tab page; you must first open any other page first. Loading about:blank does just fine.

Related Solutions

Firefox – JavaScript executed through address bar is not working in Firefox 7, 8

It's a security issue. Other browsers will follow this restriction...

Use firebug instead ;)

Firefox – How to disable a specific JavaScript alert

You can use the Greasemonkey add-on to rewrite the alert function:

// ==UserScript==
// @name        Catch JS Alert
// @namespace   http://igalvez.net
// @include     http://*
// @version     1
// @grant       none
// @run-at      document-start
// ==/UserScript==

window.alert = function(message) {
    if(message == 'Adblock detected, please consider disabling it') {
        console.log(message);
    } else {
        confirm(message);
    }
}

The way this works is as follows:

If the alert box's message matches "Adblock detected, please consider disabling it", then discard it to the JS console (it will not be displayed). Otherwise, display the alert box as a confirm box.

Best Answer

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Firefox – JavaScript executed through address bar is not working in Firefox 7, 8

Firefox – How to disable a specific JavaScript alert

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