js 数组去除重复数据

原创于 2012-06-06 09:43:38 发布 · 463 阅读

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本文介绍了一种去除数组中重复字符串的JavaScript方法，通过正则表达式和数组操作实现高效去重。

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方法一    
  
var arr = ["123","123","123","123","sfsdf","123","345","123","123","345","456","567","sdc"];   
    var str = [];   
    for(var i = 0,len = arr.length;i < len;i++){   
        ! RegExp(arr[i],"g").test(str.join(",")) && (str.push(arr[i]));   
    }   
    alert(str);highlight: javascript   
  
方法二    
  
  
var pureMulti1=function(arr){   
 var obj={};   
 var a = [];   
 for(var i=0,l=arr.length;iif(!((arr[i]+"") in obj)){   
       a.push(arr[i]);   
     }   
     obj[arr[i]]="";   
 }   
 return a;   
}