jQuery - Check if DOM element already exists

Question

I am trying to add some form elements dynamically via Ajax with jQuery. I want to make sure that I don\'t create the same element twice, so I only want to add it if it hasn\

Answer 1

No to compare anything, you can simply check that by this...,.

if(document.getElementById("url")){ alert('exit');}
if($("#url")){alert('exist');}

you can also use the html() function as well like

if($("#url).html()){alert('exist');}