How to check that a div exists jquery and if it does do nothing

Question

I'm trying to check to see if an div called .errormsg exists and if it does then I don't want anything to happen but if it doesn't exist i want my form to redirect to a new URL after it. This is what I've done but I'm not sure it's correct at all, I'm only learning so any help would be much appreciated

thanks

Answer 1

Check with a length property of a jQuery object

if($('div.errormsg').length==0)
{
 //Not exists, so redirect
 //window.location.href='newurl';
}

Answer 2

change this:

if (document.getElementById('.errormsg')) {

to this:

if (document.getElementsByClassName('errormsg').length) {

document.getElementsByClassName docs @ MDN

Answer 3

You can use .length property to check the existance of element/elements:

if(!$('.errormsg ').length){//does ot exist
  //redirect
}