Error trapping with JavaScript only works for newer generation browsers. However, older browser generally ignore window.onerror code, so it is worth putting in. There are two ways to do this: [Read More]

Regular expressions are objects in JavaScript. For example, if you have an input field that should only allow characters a-z (lower and upper case) and numerical digits, you could use regular expressions to do the input validation as follows: [Read More]

The onbeforeunload event handler (supported by Internet Explorer 4+ only) can be used to confirm that the user does want to close the browser window or navigate away from the current page. If your event handler returns something, this message will be included in a confirmation which the user must... [Read More]

I love the convenience of the Java Vector object, and JavaScript doesn’t have anything similar to use, so I created this basic class to emulate it. ```javascript /** Vector object simulating the vector object used in the Java programming language. */ function Vector() { this.myArr = new Array(); this.size =... [Read More]

Set the location and size of a new window opened with JavaScript: [Read More]