JavaScript获取多维数组中相同键值的方法示例

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<HTML>
<HEAD>
<TITLE> Demo </TITLE>
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<script>
function jstest(){
  var arr=[{'key1':'value1','key2':'value2','key3':'value3'},{'key1':'value4','key2':'value5','key3':'value6'},{'key1':'value7','key2':'value8','key3':'value9'}] ;
  var obj={};
  var narr=new Array();
  for(var i=0;i<arr.length;i++){
    for(var j in arr[i]){
      if(obj[j]!=undefined)
      obj[j]+=arr[i][j];
      else
      obj[j]=arr[i][j];
    }
  }
  for(var i in obj){
    narr.push(eval("({'"+i+"':'"+obj[i]+"'})"));
  }
  //alert(narr[0].key1);
  console.log(narr[1].key2);
}
jstest();
</script>
</HEAD>
<BODY>
</BODY>
</HTML>