How to create a dynamic label?

[jjluna13]

Hello,

I have two textboxes and one label in a form. I am looking to display the sum of both textboxes in the label on "real time", in fact to execute the sum when I lost the focus of one of the textboxes.

For example at the beginning everything is in ceros. if I type "5" in the textbox a and press [TAB] (or click outside the textbox a) the label should be "5" and if I type "2" in the textbox b and press [TAB] (or click outside the textbox b) the label should be "7".

I am new in java and web development and I really do not have idea of how two do it. I will appreciate any idea, tip or example.

Thank you in advance.

JJ

[acoder]

You need to trigger the function onchange.

Use the parseInt function to parse the string into an integer. If it's empty or not a number, change to zero by using the isNaN function.

To change the label, access it by its id using document.getEle mentById() and use its innerHTML property or the DOM methods.