Introduction to JavaScript querySelector() and querySelectorAll() methods ... The querySelector() is a method of the Element interface. The querySelector() allows ... ... <看更多>

querySelectorAll - 可重複選取多個元素. Posted on 2020-05-14 In JavaScript. 用querySelectorAll 可以選擇多筆資料. 先看下面的範例：我用JS 在 <em></em> 裡面插入 ... ... <看更多>

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// will get you all elements with this attribute. document.querySelectorAll('[data-js="someFooElement"]') ... ... <看更多>

Uncaught DOMException: Failed to execute 'querySelectorAll' on 'Document': '.form-control:visible' is not a valid selector. Surely this is valid ... ... <看更多>