HTML DOM querySelector() 方法
摘要:Document 对象 实例 获取文档中 id="demo" 的元素: document.querySelector("#demo"); <!DOCTYPE html><html><head><meta charset="utf-8"><title>菜鸟教程(runoob.com)</title><
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posted @ 2017-04-06 14:46
posted @ 2017-04-06 14:46
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