HTML代码中的label标签的作用是什么?

2024-12-31 22:20:01
推荐回答(3个)
回答1:

Label 中有两个属性是非常有用的,一个是FOR、另外一个就是ACCESSKEY了。

FOR属性
功能:表示Label标签要绑定的HTML元素,你点击这个标签的时候,所绑定的元素将获取焦点。
用法:

ACCESSKEY属性:
功能:表示访问Label标签所绑定的元素的热键,当您按下热键,所绑定的元素将获取焦点。
用法:

局限性:accessKey属性所设置的快捷键不能与浏览器的快捷键冲突,否则将优先激活浏览器的快捷键。

注释
要将 LABEL 绑定到其它的控件,请将 LABEL 元素的 FOR 属性设置为与该控件的 ID 相同。将 LABEL 绑定到控件的 NAME 属性毫无用处。但是,要提交表单,你必须为 LABEL 元素所绑定到的控件指定 NAME。

有两种方法给所指定的快捷键添加下划线。LABEL 元素的 rich text 支持可以在 ACCESSKEY 属性所指定的快捷键字符两侧加上 U 元素。如果你更愿意使用样式表(CSS)来应用样式,可以将该字符包含在 SPAN 中,并设置样式为“text-decoration: underline”。

如果用户单击 LABEL,则会先触发 LABEL 上的 onclick 事件,然后触发由 htmlFor 属性所指定的控件上的 onclick 事件。按下 LABEL 设定的快捷键将设置焦点但并不触发 onclick 事件。

标签不允许嵌套。

此元素在 Internet Explorer 4.0 及以上版本的 HTML 和脚本中可用。

此元素是内嵌元素。

此元素需要关闭标签。

元素示例代码
下面的例子使用了 LABEL 元素和 ACCESSKEY 属性设置文本框的焦点。

This example uses the LABEL element and the ACCESSKEY attribute to set focus on a text box.

Html代码
1.
4.5.SIZE="20" TABINDEX="1" ID="oCtrlID">

回答2:

回答3:

GPS定位用的.

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