Js 定义map

遍历map

var key1 = 'key1';
var key2 = '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]);
}
}

删除map

delete map[prop];