Check element exists in javascript

Code to check if element exist of not.
 You can check element exist or not with javascript by it id or name.

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Check Element exist in Javascript

With Id :

var check = document.getElementById("elementId");
if(check.length != 0)
{
      alert('I am present');
}

With Name:
 

var check = document.getElementsByName("elementName");
if(check.length != 0)
{
      alert('I am present');
}

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Check Element exist in jQuery

With Id :

if ($('#elementId').length > 0) { 
    // it exists 
}