関連ワード:  how to type a variable in javascript    how to write a variable in javascript    how to input a variable in javascript    how to make text a variable in javascript    how to check type of a variable in javascript    how to get type of a variable in javascript    how to find type of a variable in javascript    how to know type of a variable in javascript    how to print type of a variable in javascript    how to write a variable in a string javascript