方法一:
復制代碼 代碼如下:
var ary = new Array("111","22","33","111");
var s = ary.join(",")+",";
for(var i=0;i<ary.length;i++) {
if(s.replace(ary[i]+",","").indexOf(ary[i]+",")>-1) {
alert("數組中有重復元素：" + ary[i]);
break;外語屋
}
}
方法二:
復制代碼 代碼如下:
var ary = new Array("111","22","33","111");
var nary=ary.sort();
for(var i=0;i<ary.length;i++){
if (nary[i]==nary[i+1]){
alert("數組重復內容："+nary[i]);
}
}
方法三: 內陸運輸
復制代碼 代碼如下:
function isRepeat(arr){
var hash = {};
for(var i in arr) {
if(hash[arr[i]])
return true;
hash[arr[i]] = true;
}
return false;
}