目录一、len()：字符串js的"测谎仪"二、split()：字符串的"解剖刀"参数解析：实战场景：三、join()：字符串的"缝合怪"性能优势：实战案例：高级技巧：四、组合技法：三剑客联合作战五
This question is a result of the answers to this question that I just asked. It was claimed that this code is \"ugly\" because it initializes a variable to a value that will never be read:
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