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Javascript function to decrypt text encrypted by Caeser cipher.
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| function caeser(number, caeser){ | |
| for(i=0; i< caeser.length; i++){ | |
| if(caeser.charCodeAt(i)>=65 && caeser.charCodeAt(i)<=90){ | |
| if(caeser.charCodeAt(i)+number>90){ | |
| document.write(String.fromCharCode((caeser.charCodeAt(i)-90)+64+number)); | |
| }else{ | |
| document.write(String.fromCharCode(caeser.charCodeAt(i)+number)); | |
| } | |
| } else { | |
| document.write(String.fromCharCode(caeser.charCodeAt(i))); | |
| } | |
| } | |
| } | |
| caeser(3, "QEB NRFZH YOLTK CLU GRJMP LSBO QEB IXWV ALD"); | |
| //This example comes from Wikipedia: http://en.wikipedia.org/wiki/Caesar_cipher |
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