var map = {}; // Map map = new HashMap();新建map对象
map[key] = value; // map.put(key, value);存值
var value = map[key]; // Object value = map.get(key);取值
var contain = key in map; // boolean has = map.containsKey(key);boolean返回是否存在
delete map[key]; // map.remove(key);删除
// 遍历
for(key in map){
alert(key + map[key]);
}
//长度判断
var length = Object.keys(map).length ; |
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