JS实现合并两个数组并去除重复项只留一个的方法_javascript技巧

//It's merge arr1 and arr2 , delete the same element only leave one
//It's only apdapter array. If object, no. 
//The sequence of the two array is not required.
mergeArray:function (arr1, arr2){ 
 for (var i = 0 ; i < arr1.length ; i ++ ){
 for(var j = 0 ; j < arr2.length ; j ++ ){
 if (arr1[i] === arr2[j]){
 arr1.splice(i,1); //利用splice函数删除元素，从第i个位置，截取长度为1的元素
 }
 }
 }
 //alert(arr1.length)
 for(var i = 0; i 

另：前提是两个数组中的项没有重复，如果重复，将不能达到想要的效果
希望本文所述对大家JavaScript程序设计有所帮助。