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form ​

form元素，定义 HTML 表单，HTML 表单用于收集用户输入。 HTML 表单包含表单元素，指的是不同类型的input 元素、复选框、单选按钮、提交按钮等等。

表单元素 ​

input元素是最重要的表单元素。有很多形态，根据不同的 type属性： Pasted image 20250830173100.png

Pasted image 20250830173230.png 注意表单本身是不可见的，还要注意文本字段的默认宽度是 20 个字符

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input属性 Pasted image 20250830175436.png

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表单属性 ​

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