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AngularJS ng-readonly 指令


示例

使输入字段只读

只读:<input type="checkbox" ng-model="all">
<br>
<input type="text" ng-readonly="all">
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定义和用法

ng-readonly 指令设置表单字段(输入或文本区域)的 readonly 属性。

如果 ng-readonly 属性内的表达式返回 true,则表单字段将变为只读。

ng-readonly 指令对于能够在 truefalse 之间切换值是必要的。在 HTML 中,您无法将 readonly 属性设置为 false(无论其值如何,readonly 属性的存在都会使元素变为只读)。


语法

<input ng-readonly="表达式"></input>

受 <input> <textarea> 元素支持。


参数值

描述
表达式 如果返回 true,则设置元素的 readonly 属性的表达式。

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