js中生成map对象的方法

复制代码 代码如下:
var Map = function(){
this._entrys = new Array();

this.put = function(key, value){
if (key == null || key == undefined) {
return;
}
var index = this._getIndex(key);
if (index == -1) {
var entry = new Object();
entry.key = key;
entry.value = value;
this._entrys[this._entrys.length] = entry;
}else{
this._entrys[index].value = value;
}
};
this.get = function(key){
var index = this._getIndex(key);
return (index != -1) ? this._entrys[index].value : null;
};
this.remove = function(key){
var index = this._getIndex(key);
if (index != -1) {
this._entrys.splice(index, 1);
}
};
this.clear = function(){
this._entrys.length = 0;;
};
this.contains = function(key){
var index = this._getIndex(key);
return (index != -1) ? true : false;
};
this.getCount = function(){
return this._entrys.length;
};
this.getEntrys = function(){
return this._entrys;
};
this._getIndex = function(key){
if (key == null || key == undefined) {
return -1;
}
var _length = this._entrys.length;
for (var i = 0; i < _length; i++) {
var entry = this._entrys[i];
if (entry == null || entry == undefined) {
continue;
}
if (entry.key === key) {//equal
return i;
}
}
return -1;
};
this._toString = function(){
var string = "";
for (var i = 0; i < this.getEntrys().length; i++) {
string += this.getEntrys()[i].key+"::"+this.getEntrys()[i].value;
if(i!=this.getEntrys().length-1){
string += ";";
}
}
return string;
};
};

您可能感兴趣的文章:

• JavaScript中循环遍历Array与Map的方法小结
• 在JavaScript中操作数组之map()方法的使用
• js实现的map方法示例代码
• Java中快速把map转成json格式的方法
• js中遍历Map对象的方法
• js获取通过ajax返回的map型的JSONArray的方法
• 将JSON字符串转换成Map对象的方法
• Js遍历键值对形式对象或Map形式的方法
• jQuery遍历json中多个map的方法
• JS模拟的Map类实现方法
• JS实现的自定义map方法示例