Find numeric number from the text in javascript

Learn how to find find numeric number from the text using javascript.

Code :

function isNumberKey() {

var i = document.getElementById("product13").value.replace(/\D/g, '');

document.getElementById("TextBox1").value = i;

}


Use this function , it will take the value of textbox named ‘product13’ and it will find all number and assign to variable I and store its value in textbox1