Question

I have a textbox ,i want whenever user start entering a number in that texbox the previous value should be remove.

Let say there is a textbox which contain a number as 23 ,i want whenever user start typing in that same textbox 23 shold be remove and new enetered number should be shown.

Answer 1

You can use the select function on text inputs and textareas to select all of the text. Then when the user types, the text gets replaced.

For example, if the input or textarea has the id "target":

document.getElementById("target").select();

Live Example | Source