HtmlInputCheckBox 类 参考 反馈 定义 命名空间: System.Web.UI.HtmlControls 程序集: System.Web.dll 允许对服务器上的 HTML<input type= checkbox>元素进行编程访问。 C#复制 publicclassHtmlInputCheckBox:System.Web.UI.HtmlControls.HtmlInputCon
The Input Checkbox object represents an HTML <input> element with type="checkbox".Access an Input Checkbox ObjectYou can access an <input> element with type="checkbox" by using getElementById():var x = document.getElementById("myCheck"); Try it Tip: You can also access <input type="...
<input> elements of type checkbox are rendered by default as boxes that are checked (ticked) when activated, like you might see in an official government paper form. The exact appearance depends upon the operating system configuration under which the bro
The Input Checkbox object represents an HTML <input> element with type="checkbox".Access an Input Checkbox ObjectYou can access an <input> element with type="checkbox" by using getElementById():Example var x = document.getElementById("myCheck"); Try it Yourself » Tip: You can also ...
Input Checkbox defaultChecked Property❮ Input Checkbox ObjectExampleFind out if the checkbox is checked by default:var x = document.getElementById("myCheck").defaultChecked; Try it Yourself » DescriptionThe defaultChecked property returns the default value of the checked attribute....
<input type="search" name="user_search"placeholder="Search W3School"/> required 属性 required 属性规定必须在提交之前填写输入域(不能为空)。 注释:required 属性适用于以下类型的 <input> 标签:text, search, url, telephone, email, password, date pickers, number, checkbox, radio 以及 file。
Direct Known Subclasses: HtmlButtonInput, HtmlCheckBox, HtmlHiddenInput, HtmlRadio, HtmlResetInput, HtmlSubmitInput, HtmlTextInputpublic abstract class HtmlInput extends HtmlFocusEventingFormItem HtmlInput.java Created: Thu Nov 04 10:07:14 1999 Nested Class Summary static class HtmlInput.InputType ...
动态效果,如缩放,覆盖,滑出网页或单个视觉元素,可帮助用户理解网页信息架构。通常是通过转场和菜单来展开网页。 表现层级关系 为了展现层与层的关系,是抽屉,是打开,还是平级切换等等。让用户知道这个界面和上一个、下一个的关系。 清晰明确 动效可以清晰地表明各种数据块中间的逻辑结构,即使在数据高度饱和的情况下也...
element to create two check boxes with explanatory text. The onclick events call two script functions. The first check box is checked.<INPUT TYPE=checkbox CHECKED ID=chk1 onclick="choosebox1()">Uncheck this check box for some free advice.<P><INPUT TYPE=checkbox ID=chk2 on...
2.1 DOM Level 0 Events说明:0级DOM事件规范;最初的HTML文档事件规范,由Netscape Navigator 3 或 微软IE 3实现。规范简介:①定义了元素的基本事件。如:click、load等;②以元素的属性方式调用事件。如:<button onclick="fn()"></buttom> 或者 htmlElement.onclick=function(){};...