Name the variable as launch and make the type as string type.
变量名称作为开始和数据类型为字符串类型。
Name: string variable with read and write access.
名称：字符串变量可以读写访问。
Returns a string value containing the Visual Basic data type name of a variable.
返回一个字符串值，它包含变量的系统数据类型名称。
How to turn variable name into string in JS?
如何把变量名为字符串在JS ？
How to turn variable name into string in JS?
如何把变量名为字符串在JS ？
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