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initialization
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  • javascript function variables undefined initialization
    JavaScript 检查变量是否存在(已定义/初始化) 哪种检查变量是否已初始化的方法更好/正确?(假设变量可以容纳任何东西(字符串,int,对象,函数等))
  • javascript function variables undefined initialization
    JavaScript check if variable exists (is defined/initialized) Which method of checking if a variable has been initialized is better/correct? (Assuming the variable could hold anything (string, int, object, function, etc.))
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