javascript - 遍历对象中的键值

Question

我从本地存储中获取对象数组:

saved_selection = window.localStorage.getItem('match_selection');

console.log('saved selection obj is ');
console.log(saved_selection);

输出是:

{"236":"Forward_2","243":"Forward_1"} 

现在我想遍历并获取键和值。所以我这样做:

for(var index in saved_selection) {
    console.log(index + " -> " + saved_selection[index]); 
}

但是我得到:

0 -> { 
1 -> " 
2 -> 2 
3 -> 3 

等等，而不是:

236 -> Forward_2
243 -> Forward_1

如何获得所需的输出？

Answer 1

你想解析出localStorage返回的字符串:

saved_selection = JSON.parse( window.localStorage.getItem('match_selection') );