var obj = { one: 1, two: 2, three: 3 }; $.each(obj, function(key, val) { console.log(key); console.log(val); }); console.log(Object.keys(obj).length)
只使用一个Object.keys(obj).length的方法即可搞定
var obj = { one: 1, two: 2, three: 3 }; $.each(obj, function(key, val) { console.log(key); console.log(val); }); console.log(Object.keys(obj).length)
只使用一个Object.keys(obj).length的方法即可搞定