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HomeBackend DevelopmentPHP TutorialHTML <input> value属性表示什么

HTML <input> value属性表示什么

Jun 06, 2016 pm 08:50 PM
htmlinput

HTML <input> value属性表示什么

HTML d5fd7aea971a85678ba271703566ebfd value属性是什么

定义和用法

value 属性规定 d5fd7aea971a85678ba271703566ebfd 元素的值。

value 属性对于不同 input 类型,用法也不同:

对于 "button"、"reset"、"submit" 类型 - 定义按钮上的文本

对于 "text"、"password"、"hidden" 类型 - 定义输入字段的初始(默认)值

对于 "checkbox"、"radio"、"image" 类型 - 定义与 input 元素相关的值,当提交表单时该值会发送到表单的 action URL。

注意:value 属性对于 514d05be645eb7d51e331036aaf6fa36 和 5531b4c9ceb3f990b641fa70a3e40caa 是必需的。

注意:value 属性不适用于 a2dc5349fb8bb852eaec4b6390c03b14。

HTML 4.01 与 HTML5之间的差异

无。

语法

<input value="text">

属性值

值 

text 规定 d5fd7aea971a85678ba271703566ebfd 元素的值。

实例

带有初始(默认)值的 HTML 表单:

<form action="demo_form.php">
First name: <input type="text" name="fname" value="John"><br>
Last name: <input type="text" name="lname" value="Doe"><br>
<input type="submit" value="提交表单">

运行效果:

企业微信截图_15926247739401.png

所有主流浏览器都支持 value 属性。

推荐:《HTML视频教程

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