JavaScript

This article will tell you how to use the javascript window object’s postMessage(message, targetOrigin) method to post text messages ( or javascript object’s JSON string data ) between the iframe/popup window and it’s parent window with examples.

This article will tell you how to debug javascript issues when you meet them using iOS Chrome, Safari web browser and Android Chrome, Firefox web browser.

I Include an external javascript file in an Html file, when I browse the Html file in a web browser, I meet the javascript error with the error message Uncaught SyntaxError: Invalid or unexpected token. This article will tell you how to fix it.

I include an external javascript file in my Html file, this javascript file is written by me also. The Html file name is test.html, the javascript file name is test.js. I upload the two files to a local web browser ( if not upload the file test.html, test.js to a web server, you will encounter …

How To Fix Failed To Load Module Script: Expected A Javascript Module Script But The Server Responded With A Mime Type Of “text/plain”. Strict Mime Type Checking Is Enforced For Module Scripts Per Html Spec Read More »

I write an Html file, and include an external javascript file in the Html file with the code <script type=”module” src=”test.js” ></script>. But when I open the Html file from a web browser with a local file URL like file:///D:/Work/……/test.html that starts with the file:// protocol scheme, it shows the error message Access to script …

How To Fix Error Access To Script At From Origin ‘null’ Has Been Blocked By Cors Policy: Cross Origin Requests Are Only Supported For Protocol Schemes: Http, Data, Chrome, Chrome-extension, Chrome-untrusted, Https Read More »