encrypting string in javascript without external library -

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basically, i'd have javascript function checks whether you've entered specific string -- don't want string visible in source code. in mind, go this:

function checkpass(input) {     if (encrypt(input) === 'ojqqyaqud4aplzvag3fvcii8os9qbr23tlzwwjbw') {         alert('success');     } else {         alert('fail');     }  }  function encrypt(input) {     //pass through encryption algorithm }

how might accomplish –– ideally, without external libraries?

because javascript can seen in source, there not can do.

minify - in order make harder read , obfuscation

another thing use http://javascript2img.com/ make hard read.


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