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var obj={ 'sprite-icon.png': 'sprite-icon.png?v=62df6cbea3', 'sprite-icon_ie9.png': 'sprite-icon_ie9.png?v=5f35b8f025' }; for(name in obj){ console.log(name); } 遍历对象，并输出 当前是第几个键值对。以及这个对象总共有多少个键值对。
光阴似箭催人老，日月如移越少年。
var obj = { a: 1, b: 2, c: 3 }; var keys = Object.keys(obj); console.log('长度', keys.length); keys.forEach(function(key, index) { console.log('当前是第', index + 1, '个, key是', key, ', value是', obj[key]); });
Object.keys(obj).forEach((item,index)=>{console.log(item,obj[item],index)}) Object.keys(obj).length
Correct answer upstairs, please add words for like
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Correct answer upstairs, please add words for like