onfocus () event of control trigger java script function as well as control get in focus that means are comes in use. In this demonstration we learn that how to use onfocus () event in java script.
Write down following code in the body section of html document
<input type="text" id="txtFocusEvent" onfocus="alert('Textbox control got focus.')" />
Output of the above code snippet is as follows
As soon as user click on text box control for writing some text then an alert window is displayed with a message that Textbox control got focus.
After clicking on text box…