AngularJS ng-change 指令的详解及简单实例

AngularJS ng-change 指令

AngularJS 实例

当输入框的值改变时执行函数:

    <div> <p>在输入框中输入一些信息:</p><p>输入框已经修改了 {{count}} 次。</p></div>

运行结果：

 在输入框中输入一些信息:

输入框已经修改了 0 次。

定义和用法

ng-change 指令用于告诉 AngularJS 在 HTML 元素值改变时需要执行的操作。

ng-change 指令需要搭配 ng-model 指令使用。

AngularJS ng-change 指令指令不会覆盖原生的 onchange 事件, 如果触发该事件，ng-change 表达式与原生的 onchange 事件都会执行。

ng-change 事件在值的每次改变时触发，它不需要等待一个完成的修改过程，或等待失去焦点的动作。

ng-ch

ange 事件只针对输入框值的真实修改，而不是通过 JavaScript 来修改。

语法

, , 和  元素支持。</p> <p><strong>参数值</strong></p> <table style="width: 583px;height: 49px"> <tbody> <tr> <th>值</th> <th>描述</th> </tr> <tr> <td>expression</td> <td>元素值改变时执行表达式。</td> </tr> </tbody> </table> <p>以上就是对AngularJS ng-change 指令的知识整理，后续继续补充。</p> </div> <p>以上就是AngularJS ng-change 指令的详解及简单实例的详细内容，更多请关注<a href="https://www.gaodaima.com/go.html?url=http://www.gaodaima.com" rel="nofollow" >gaodaima搞代码网</a>其它相关文章！</p> <hr /><div class="open-message">搞代码网（<a href="www.gaodaima.com" target="_blank" title="gaodaima.com">gaodaima.com</a>）提供的所有资源部分来自互联网，如果有侵犯您的版权或其他权益，请说明详细缘由并提供版权或权益证明然后发送到邮箱<a>chengxuyuan@gaodaima.com‍</a>，我们会在看到邮件的第一时间内为您处理，或直接联系<a>QQ：872152909</a>。本网站采用<a href="https://www.gaodaima.com/go.html?url=http://creativecommons.org/licenses/by-nc-sa/3.0/" rel="nofollow" target="_blank" title="BY-NC-SA授权协议">BY-NC-SA</a>协议进行授权 <br >转载请注明原文链接：<a href="https://www.gaodaima.com/74796.html" target="_blank" title="AngularJS ng-change 指令的详解及简单实例">AngularJS ng-change 指令的详解及简单实例</a><a 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