Javascript未能在IE中输出正确的输出

<script> 
// This would be the place to edit if you want a different 
// Base32 implementation 

var alphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 


/** 
* Build a lookup table and memoize it 
* 
* Return an object that maps a character to its 
* byte value. 
*/ 

var lookup = function() { 
    var table = {} 
    // Invert 'alphabet' 
    for (var i = 0; i < alphabet.length; i++) { 
     table[alphabet[i]] = i 
    } 

    lookup = function() { return table } 
    return table 
} 


// Functions analogously to Encoder 

function Decoder() { 
    var skip = 0 // how many bits we have from the previous character 
    var byte = 0 // current byte we're producing 

    this.output = '' 

    // Consume a character from the stream, store 
    // the output in this.output. As before, better 
    // to use update(). 
    this.readChar = function(char) { 
     if (typeof char != 'string'){ 
      if (typeof char == 'number') { 
       char = String.fromCharCode(char) 
      } 
     } 
     //char = char.toLowerCase() 
     var val = lookup()[char] 
     if (typeof val == 'undefined') { 
      // character does not exist in our lookup table 
      return // skip silently. An alternative would be: 
      // throw Error('Could not find character "' + char + '" in lookup table.') 
     } 
     val <<= 3 // move to the high bits 
     byte |= val >>> skip 
     skip += 5 
     if (skip >= 8) { 
      // we have enough to preduce output 
      this.output += String.fromCharCode(byte) 
      skip -= 8 
      if (skip > 0) byte = (val << (5 - skip)) & 255 
      else byte = 0 
     } 

    } 

    this.finish = function(check) { 
     var output = this.output + (skip < 0 ? alphabet[bits >> 3] : '') + (check ? '$' : '') 
     this.output = '' 
     return output 
    } 
} 

Decoder.prototype.update = function(input, flush) { 
    for (var i = 0; i < input.length; i++) { 
     this.readChar(input[i]) 
    } 
    var output = this.output 
    this.output = '' 
    if (flush) { 
     output += this.finish() 
    } 
    return output 
} 

/** Convenience functions 
* 
* These are the ones to use if you just have a string and 
* want to convert it without dealing with streams and whatnot. 
*/ 


// Base32-encoded string goes in, decoded data comes out. 
function decode(input) { 
    var decoder = new Decoder() 
    var output = decoder.update(input.split("").reverse().join("")+'A', true) 
    return output 

} 

function toHex(str) { 
    var hex = ''; 
    for(var i=0;i<str.length;i++) { 
     //hex += ''+("00" + str.charCodeAt(i).toString(16)).substr(-2); 
     hex += str.charCodeAt(i).toString(16); 
     } 
    return hex; 
} 

convertHex = toHex(decode('A0C4KB')); 
alert(convertHex); 
</script>

上述脚本在FF和Chrome上正常工作，并给出正确的十六进制值。警报输出将其视为与Javascript未能在IE中输出正确的输出

预计abc2d0

对于IE，这似乎并没有工作。我得到的所有

FFFFFFFF

这是一个Base32实现，我从https://github.com/agnoster/base32-js

来源

2012-09-17 Omair .

在IE9和IE8中正常工作 - 我假设你使用的是IE7？解决方案=升级浏览器这里是每个人的小提琴：http://jsfiddle.net/neuroflux/DSvGj/ –

@Neurofluxation：OP可能能够更新他/她的浏览器，但不是客户端的浏览器。我完全理解必须处理旧引擎的挫折感，但所有实现都支持'.charAt'，并且您不必强迫用户离开暗边，即IE –

这可能是机器与最新的补丁，你使用的是神经...我在一台老机器上测试了IE8和IIRC IE9无法正常工作。 –

Internet Explorer的JScript引擎pickep了不支持字符串常量数组访问。您必须将alphabet[i]替换为alphabet.charAt(i)以使其正常工作。不过，我认为MS已经解决了这个问题，但我可能是错的/太有希望了。

来源

2012-09-17 07:04:40

Javascript未能在IE中输出正确的输出

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