The HTML <button> element is an interactive element that is activated by a user with a mouse, keyboard, finger, voice command, or other assistive technology. It performs a programmable action, such as submitting a form or opening a dialog when clicked. For example, <button type="button">...
The <legend> element defines a caption for the <fieldset> element.Example <form action="/action_page.php"> <fieldset> <legend>Personalia:</legend> <label for="fname">First name:</label><br> <input type="text" id="fname" name="fname" value="John"><br> <label for="lname">...
Example A form with a keygen field: <form action="action_page.php"> Username: <input type="text" name="user"> Encryption: <keygen name="security"> <input type="submit"> </form> Try it Yourself » HTML5 <output> ElementThe <output> element represents the result of a calculation ...
Example: HTML Form The HTML <form> element is used to create HTML forms. For example, <form> <label for="firstname">First name: </label> <input type="text" name="firstname" required> <br> <label for="lastname">Last name: </label> <input type="text" name="lastname" required>...
Example First name: Last name: Try it Yourself » The <form> ElementThe HTML <form> element is used to create an HTML form for user input:<form> . form elements . </form>The <form> element is a container for different types of input elements, such as: text fields, checkboxes, ...
A form element’s default button is the first Submit Button in tree order whose form owner is that form element. form的第一个submit按钮作为default button If the user agent supports letting the user submit a form implicitly (for example, on some platforms hitting the "enter" key while a tex...
In the following example, we will create a simple HTML form(login form) where a user can enter his/her name with the help of<form>element and form controls like input, type and name. <!DOCTYPE html><html><head><metacharset="utf-8"><title>Sample HTML Form</title></head><body><!
提交按钮</form> action属性指定了表单数据提交的目标 URL。 method属性定义了提交表单时使用的 HTTP 方法,通常是 "get" 或 "post",不写默认是"get"。 2、输入元素: 在<form>中,你可以包含各种输入元素,如文本框、单选按钮、复选框、下拉列表等,以便用户输入数据。
HTMLIFrameElement 属性 该元素包含全局属性。 align已废弃HTML4.01,已废弃HTML5在包含此元素的上下文环境中的对齐方式frameborderHTML 4only取值为1时(默认值),告诉浏览器在当前iframe与其他iframe之间绘制边框,取0时则无需绘制此边框。 height以CSS像素格式HTML5,或像素格式HTML 4.01,或百分比格式指定frame的高度。
The Parent property returns the HtmlElement in which the current element is nested.You often need access to attributes, properties, and methods on the underlying element that are not directly exposed by HtmlElement, such as the SRC attribute on an IMG element or the Submit method on a FORM....