Check if a div does NOT exist with javascript
var myElem = document.getElementById('myElementId');if (myElem === null) alert('does not exist!');
if (!document.getElementById("given-id")) {//It does not exist}The statement document.getElementById("given-id") returns null if an element with given-id doesn't exist, and null is falsy meaning that it translates to false when evaluated in an if-statement. (other falsy values)
Check both my JavaScript and JQuery code :
JavaScript:
if (!document.getElementById('MyElementId')){ alert('Does not exist!');}JQuery:
if (!$("#MyElementId").length){ alert('Does not exist!');}