<div><img id="js-pic" src="https://picsum.photos/300/200?image=0"></div>
<div><img id="jq-pic" src="https://picsum.photos/300/200?image=2"></div>
document.getElementById('js-pic').before('<strong>JavaScript筆電：</strong>','樓下是jQuery筆電');
$('#jq-pic').before('<strong>jQuery筆電：</strong>','在jQuery這裡strong標籤是html標籤喔不是文字');
上面的用 JavaScript ,下面的用jQuery，都可以放多項內容
差別在於用 JavaScript html 會變成文本
after()也是差不多東西
用before()加入文字 上面的用 JavaScript ,下面的用jQuery，都可以放多項內容差別在於用 J...
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本文标题：Day 19 : before() - JavaScript &
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