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                [TOC] # 獲取頁面元素 ## 根據id獲取元素 ~~~ var div = document.getElementById('main'); console.log(div); // 獲取到的數據類型 HTMLDivElement,對象都是有類型的 ~~~ 注意:由于id名具有唯一性,部分瀏覽器支持直接使用id名訪問元素,但不是標準方式,不推薦使用。 ## 根據標簽名獲取元素 ~~~ var divs = document.getElementsByTagName('div'); for (var i = 0; i < divs.length; i++) { var div = divs[i]; console.log(div); } ~~~ ## 根據name獲取元素 ~~~ var inputs = document.getElementsByName('hobby'); for (var i = 0; i < inputs.length; i++) { var input = inputs[i]; console.log(input); } ~~~ ## 根據類名獲取元素 ~~~ var mains = document.getElementsByClassName('main'); for (var i = 0; i < mains.length; i++) { var main = mains[i]; console.log(main); } ~~~ ## 根據選擇器獲取元素 ~~~ var text = document.querySelector('#text'); console.log(text); var boxes = document.querySelectorAll('.box'); for (var i = 0; i < boxes.length; i++) { var box = boxes[i]; console.log(box); } ~~~
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