下面小编就为大家带来一篇javascript ASCII和Hex互转的实现方法。小编觉得挺不错的，现在就分享给大家，也给大家做个参考。一起跟随小编过来看看吧
实例如下：
<script> var symbols = " !\"#$%&'()*+,-./0123456789:;<=>?@"; var loAZ = "abcdefghijklmnopqrstuvwxyz"; symbols+= loAZ.toUpperCase(); symbols+= "[\\]^_`"; symbols+= loAZ; symbols+= "{|}~"; //Hex to ASCII function toAscii(str) { valueStr = str.toLowerCase(); var hex = "0123456789abcdef"; var text = ""; var i=0; for( i=0; i<valueStr.length; i=i+2 ) { var char1 = valueStr.charAt(i); if ( char1 == ':' ) { i++; char1 = valueStr.charAt(i); } var char2 = valueStr.charAt(i+1); var num1 = hex.indexOf(char1); var num2 = hex.indexOf(char2); var value = num1 << 4; value = value | num2; var valueInt = parseInt(value); var symbolIndex = valueInt - 32; var ch = '?'; if ( symbolIndex >= 0 && value <= 126 ) { ch = symbols.charAt(symbolIndex) } text += ch; } return text; } //ASCII to Hex function toHex(str) { var valueStr = str; var hexChars = "0123456789abcdef"; var text = ""; for( i=0; i<valueStr.length; i++ ) { var oneChar = valueStr.charAt(i); var asciiValue = symbols.indexOf(oneChar) + 32; var index1 = asciiValue % 16; var index2 = (asciiValue - index1)/16; if ( text != "" ) text += ":"; text += hexChars.charAt(index2); text += hexChars.charAt(index1); } return text; } </script>
以上就是小编为大家带来的javascript ASCII和Hex互转的实现方法全部内容了，希望大家多多支持脚本之家~
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