我知道你可以通过循环遍历数组元素和连接来实现这一点.但我正在寻找单线解决方案.toString()和join()返回带有逗号分隔的元素的字符串.例如,
var array = ['apple', 'tree'];
var toString = array.toString() # Will return 'apple,tree' instead of 'apple tree', same for join() method
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