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teaching/林锦绣/form.html
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22
teaching/林锦绣/form.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Document</title>
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</head>
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<body>
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<input type="text" value="">
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<script>
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// 1.选中目标元素 2. 取出value的值
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// 1.选中目标元素 除了通过id来取之外,其他取出来的值都是一些集合(数组)
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// id具有唯一性 所以通过id来取的结果 就是单个元素
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var info=document.getElementsByTagName("input")
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console.log(info)
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document.write("值为"+info[0].value)
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alert(info[0].value)
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prompt("fdgf")
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</script>
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</body>
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</html>
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