//建立对象 var bookAuthors = { "Farmer Giles of Ham": "J.R.R. Tolkien", "Out of the Silent Planet": "C.S. Lewis", "The Place of the Lion": "Charles Williams", "Poetic Diction": "Owen Barfield" }; //获取对象key var arr = Object.keys(bookAuthors); //输出长度 console.log(arr.length)
js获取对象长度
原文链接:js获取对象长度,转发请注明来源!
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