<!DOCTYPE html> <html lang="zh-cn"> <head> <meta charset="utf-8"> <title>表单元素[下]</title> </head> <body> <form action="http://li.cc" novalidate oninput="res.value = num1.valueAsNumber * num2.valueAsNumber"> <!-- <select name="fruit" size="10" multiple> <optgroup label="水果"> <option value="1">苹果</option> <option value="2" selected>香蕉</option> <option value="3">桔子</option> </optgroup> <optgroup label="粗粮"> <option value="4">小米</option> <option value="5">大米</option> <option value="6">玉米</option> </optgroup> </select> --> <!-- <textarea name="content" rows="20" cols="40" wrap="hard">请留下您的建议!</textarea> --> <!-- <input type="number" id="num1"> x <input type="number" id="num2"> = <output for="num1 num2" name="res"> --> <!-- <input type="text" required> --> <!-- <input type="number" min="10" max="100"> --> <input type="text" placeholder="请输入区号+座机" pattern="^[\d]{2,4}\-[\d]{6,8}$"> <button>提交</button> </form> </body> </html>
第10章 表单元素[下]
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