Category «Javascript»

Why you should stop using onload method.

Waiting for onload

It is amazing that many web developers still use onload method embedded in the BODY tag, like <HEAD> <BODY onload=”document.contact.userID.focus();”> <form name=”contact”> <input type=”text” name=”userID” > </form> </BODY> </HEAD> There are two problems with this line of code. Embedding code (behavior) with HTML (structure) makes it difficult to maintain the page. onload() method will executes …

Nine Must Have JavaScript Tools For Every Web Developer

Almost all major web development projects include some javascript. Developing Javascript may be easy for some but working around various browsers’ incompatiblities makes it a bit more tedious chore. As a developer I always welcome the opportunity to use development tools that may help in the development process. Following is a list of some useful …

How to display RSS feed on your website.

Image credit:Kyle Wegner OK, admit this. You have a nice-looking website. The color and the graphics look pleasing to visiting eyes. But you do not get a lot of loyal visitors. The problem may not be your design, it may be the static content that is turning the visitors off. If you do not update …

Validate U.S Phone Numbers using JavaScript Regular expression.

Photo credit: aussiegall Continuing with our JavaScript regular expression series today we will discuss JavaScript regular expression to validate U.S phone number. Previously we talked about validating email , Social Security number and zip code using JS regex. In today’s post I’ll show you how to use JavaScript regular expression to validate U.S phone number. …

Validate Zip code using JavaScript Regular expression

Zip Code

Continuing with my series of JavaScript regular expression today we will see how easy it is to validate zip code using regular expression in JavaScript. Previously we talked about validating email and Social Security number using JS regex. In today’s post I’ll show you how to use JavaScript regular expression to validate zip code. Let …

Validate email address using JavaScript regular expression

Last month I wrote about regular expressions in Java, today I’ll show you how to use regular expression in JavaScript to validate email address. Here is the code to validate email address in JavaScript using regular expression. function validateEmail(elementValue){ var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/; return emailPattern.test(elementValue); } Explanation: The argument to this method is the email …

Set focus on the first text field of HTML form.

A HTML form is a very good channel that you can offer to your visitors to contact you. An aesthetically appealing form encourages user to fill and submit it. It is equally important to make the form as user friendly as possible. Today I’ll share a small JavaScript function that will set the focus on …

Sort numbers in Javascript array

Sorting an array in Javascript is a snap. You create an array and then call sort() method on that array. The Javascript sort() method sorts an array in lexicographical order. This method is very useful in sorting alphanumeric values of an array. However, sort() will not work if the array consists of numeric values. Because …