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var arr = [1, 2, 3, 4, 5, 6, 7, 8, 9]; arr.map(string); //结果: ['1', '2', '3', '4', '5', '6', '7', '8', '9'] var a = ['1', '2', '3', '4', '5', '6', '7', '8', '9'] a.map(number); //结果:[1, 2, 3, 4, 5, 6, 7, 8, 9]
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vue源码实战render.js与$nextTick的异步调用
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