var key1 = ‘动态key1’; var key2 = ‘动态key2’; var map = {}; map[key1] = 1; map[key2] = 2;
console.log(map[key1]);//结果是1. console.log(map[key2]);//结果是2.
//如果遍历map for(var prop in map){ if(map.hasOwnProperty(prop)){ console.log(‘key is ’ + prop +’ and value is’ + map[prop]); } }
原文:https://zhidao.baidu.com/question/1111494250799257659.html