get a div height 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;