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var map = {}; // Map map = new HashMap();map[key] = value; // map.put(key, value);var value = map[key]; // Object value = map.get(key);var has = key in map; // boolean has = map.containsKey(key);delete map[key]; // map.remove(key);// 遍历 for(key in map){ alert(key + map[key]); } //长度判断var length = Object.keys(map).length ;
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