js数组删除所有重复的元素答:function delArrElem(arr, s){ var i=arr.length; while(i--)if(arr[i]===s)arr.splice(i,1); return arr;}var arr=[3,78,34,123,4,5,66,34,55];alert(arr);alert(delArrElem(arr,34));
JS怎么查询删除二维数组里的一维数组[{1,2},{3,4},{5,6},{7,8},{9...答:var arr1=[[1,2],[3,4],[5,6],[7,8],[9,10]];var arr2=[2,8];var str1=JSON.stringify(arr1);for(var i=0;i<arr2.length;i++){ str1=str1.replace(new RegExp(",?" + arr2[i],"g"),"");} arr1=eval("("+str1+")");console.log(arr1);