案例：javascript案例     状态：可编辑再运行    进入竖版
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<!DOCTYPE html>
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<html>
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<body>
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​
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<h3>演示如何访问 LABEL 元素</h3>
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​
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<form id="myForm" action="form_action.asp">
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  <input type="radio" name="sex" id="male" value="male">
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</form>
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​
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<p>点击按钮来创建 LABEL 元素。</p>
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​
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<button onclick="myFunction()">试一下</button>
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<script>
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function myFunction()
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{
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var x = document.createElement("LABEL");
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var t = document.createTextNode("Male");
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x.setAttribute("for", "male");
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x.appendChild(t);
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document.getElementById("myForm").insertBefore(x,document.getElementById("male"));
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}
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</script>
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​
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</body>
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</html>
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