js 定义像java一样的map方便取值

<script>
    //定义一个全局map
    var map = {};
    var key0 = ‘0‘;
    var key1 = ‘1‘;
    map[key0] = ‘0-真实报文‘;
    map[key1] = ‘1-虚拟报文‘;
    //row 获取这行的值 ，index 获取索引值 
    function testJsMap(key){ 
        //如果遍历map
        for(var prop in map){
            if(map.hasOwnProperty(prop)){
                console.log(‘ key is ‘ + prop +‘ and value is ‘ + map[prop]);
            }
        }
        var value = map[key]; 
        return value;
    }
</script>