JavaScript

Google provides a very good chart package which allows you to integrate with your website via JavaScript. You just need to feed the values and it will generate the chart for you. I have just generated a sample bar chart script using Google Charts. Check out the Google Bar Chart Sample code here

You may have come across situations where you don’t want the HTML form to submit on pressing Enter key. The reason could be that you may have a long form which the user needs to fill and most users may have the habit of pressing Enter key when trying to move to the next field. … Read more

If your web page contains a lot of JavaScript libraries (local and external) then you may have come across a situation where the page may not behave as you may like it. Sometimes a JavaScript functionality stops working or you see the page validation does not seem to be working like it should. To work … Read more

If you have a form on a web page and you only want to allow numbers 0-9 to be input in the textbox and disallow any alphabets and other ASCII characters then you can do it easily using jQuery. We will be using the keypress event and will bind our text box to it so … Read more

Sometimes you may across a situation where you need to update the value of your drop down options based on some condition in your form. jQuery provides a very nice way to do this for you. Following example shows you how you can update the values in option elements of a SELECT drop down. Enter … Read more

If you would like to open some links on your web page on a new page and you would like it to be done automatically then you can add the following JavaScript code in the head section of your web page and the links will open up in a new window. … Please add the … Read more

Ryan Fait has added a wonderful script which can help you customize the look and feel of the form elements on your web page like check boxes, radio buttons and select drop downs. The name of the script is custom form elements and there is a nice example on his website which shows you how … Read more

Some times we need to force customer to enter the details as required by our system. We can validate the input using regular expression in JavaScript and alert the visitor of the problem. Use the following JavaScript function to check for valid full name which has only one space in between. The same function can … Read more

Following is a custom JavaScript function which will trim whitespace characters from your string variable. This function can also be used in your validation functions to check whether the user has deliberately entered whitespace characters or not. … function trimstr(sString) { while (sString.substring(0,1) == ‘ ‘) { sString = sString.substring(1, sString.length); } while (sString.substring(sString.length-1, sString.length) … Read more