let location = {province: '湖北', city: '武汉', country: '武昌'};
for (key in location) {
console.log(location.key);
console.log(location[key]);
}
undefined
湖北
undefined
武汉
undefined
武昌
Js中遍历对象的属性的误区
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转载自blog.csdn.net/qq_23143555/article/details/81155769
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