js获取对象的属性个数
var obj = {
key1:1,
key2:2,
key3:3
};
Object.getOwnPropertyNames(obj).length //3
Object.keys(obj).length //3js获取对象的属性个数
var obj = {
key1:1,
key2:2,
key3:3
};
Object.getOwnPropertyNames(obj).length //3
Object.keys(obj).length //3
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