how to calculate width and height of div js code example

Example 1: javascript get element width

var width = document.getElementById('myID').offsetWidth;//includes margin,border,padding
var height = document.getElementById('myID'). offsetHeight;//includes margin,border,padding

Example 2: find div height in javascript

//includes margin and padding
document.getElementById('myDiv').offsetHeight;
//without margin and padding
document.getElementById('myDiv').clientHeight;