GetElementByClassName去與IE 7

Question

對不起，請遵循本主題

http://stackoverflow.com/questions/11044825/javascript-run-on-ie-7 

我想用document.GetElementByClassName ON INTERNET EXPLORE 7

後，我下載下面的js文件並將其粘貼到我的代碼

http://robertnyman.com/2008/05/27/the-ultimate-getelementsbyclassname-anno-2008/ 

這裏是我的代碼

<script> 
var getElementsByClassName = function (className, tag, elm){ 
    if (document.getElementsByClassName) { 
     getElementsByClassName = function (className, tag, elm) { 
      elm = elm || document; 
      var elements = elm.getElementsByClassName(className), 
       nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null, 
       returnElements = [], 
       current; 
      for(var i=0, il=elements.length; i<il; i+=1){ 
       current = elements[i]; 
       if(!nodeName || nodeName.test(current.nodeName)) { 
        returnElements.push(current); 
       } 
      } 
      return returnElements; 
     }; 
    } 
    else if (document.evaluate) { 
     getElementsByClassName = function (className, tag, elm) { 
      tag = tag || "*"; 
      elm = elm || document; 
      var classes = className.split(" "), 
       classesToCheck = "", 
       xhtmlNamespace = "http://www.w3.org/1999/xhtml", 
       namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null, 
       returnElements = [], 
       elements, 
       node; 
      for(var j=0, jl=classes.length; j<jl; j+=1){ 
       classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]"; 
      } 
      try { 
       elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null); 
      } 
      catch (e) { 
       elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null); 
      } 
      while ((node = elements.iterateNext())) { 
       returnElements.push(node); 
      } 
      return returnElements; 
     }; 
    } 
    else { 
     getElementsByClassName = function (className, tag, elm) { 
      tag = tag || "*"; 
      elm = elm || document; 
      var classes = className.split(" "), 
       classesToCheck = [], 
       elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag), 
       current, 
       returnElements = [], 
       match; 
      for(var k=0, kl=classes.length; k<kl; k+=1){ 
       classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)")); 
      } 
      for(var l=0, ll=elements.length; l<ll; l+=1){ 
       current = elements[l]; 
       match = false; 
       for(var m=0, ml=classesToCheck.length; m<ml; m+=1){ 
        match = classesToCheck[m].test(current.className); 
        if (!match) { 
         break; 
        } 
       } 
       if (match) { 
        returnElements.push(current); 
       } 
      } 
      return returnElements; 
     }; 
    } 
    return getElementsByClassName(className, tag, elm); 
}; 

並調用getElemeentsByClassName功能

var list = document.getElementsByClassName("count_regulation"); 
for (var i = 1; i <= list.length; i++) { 
    list[i].innerHTML = i; 
} 

仍然對IE 7沒有影響 - 。請解釋當我使用js時我錯了哪一部分，因爲我是Javascript的新手。由於提前

Answer 1

嘗試沒有document：

var list = /*no document here*/getElementsByClassName("count_regulation"); 
for (var i = 1; i <= list.length; i++) { 
    list[i].innerHTML = i; 
}