How to convert password into md5 in jquery?

Download and include this plugin

<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.2/rollups/md5.js"></script>

and use like

if(CryptoJS.MD5($("#txtOldPassword").val())) != oldPassword) {

}

//Following lines shows md5 value
//var hash = CryptoJS.MD5("Message");
//alert(hash);

jQuery doesnt have a method to provide the md5 of a string. So you need to use some external script. There is a plugin called jQuery MD5. and it gives you number of methods to achieve md5. Few of those are

Create (hex-encoded) MD5 hash of a given string value:

var md5 = $.md5('value');

Create (hex-encoded) HMAC-MD5 hash of a given string value and key:

var md5 = $.md5('value', 'key');

Create raw MD5 hash of a given string value:

var md5 = $.md5('value', null, true);

Create raw HMAC-MD5 hash of a given string value and key:

var md5 = $.md5('value', 'key', true);

This might do what you want... Check the snippet here. jQuery MD5