sdp1993的专栏

js_extends.html -->//用于清空数组Array.prototype.clear = function() { this.length = 0;}//判断数据项在数组中的位置var oldArrayIndexOf = Array.indexOf;//判断是否原始浏览器是否存在indexOf方法Array.p

下面是上传主页面

function Map() { var struct = function(key, value) { this.key = key; this.value = value; } var put = function(key, value){ for (var i = 0; i < this.arr.length; i

test_array.html -->//合并数组var arr = new Array(3)arr[0] = "George"arr[1] = "John"arr[2] = "Thomas"var arr2 = new Array(3)arr2[0] = "James"arr2[1] = "Adrew"arr2[2] =