webStorm：即便正確的代碼也會提示綠色波浪線的解決方法

（代碼提示：Typo: In word ‘onreadystatechange’ less… (Ctr|+F1) Spellchecker inspection helps locate typos and misspelling in your code, comments and literals, and fix them in one click.）web 以下狀況： 代碼中的對象函數on

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