您可以使用自定义方法扩展Array原型：
// check if an element exists in array using a comparer function// comparer : function(currentElement)Array.prototype.inArray = function(comparer) { for(var i=0; i < this.length; i++) { if(comparer(this[i])) return true; } return false; };// adds an element to the array if it does not already exist using a comparer // functionArray.prototype.pushIfNotExist = function(element, comparer) { if (!this.inArray(comparer)) { this.push(element); }};var array = [{ name: "tom", text: "tasty" }];var element = { name: "tom", text: "tasty" };array.pushIfNotExist(element, function(e) { return e.name === element.name && e.text === element.text; });
