我已经设置了一个将Angular集成到其中的表单。在这种形式中,我希望最终提交按钮仅在表单有效时显示。有许多字段,但唯一需要的字段是用户的名称,电子邮件地址和复选框。当必填字段无效时,表单会识别,但我无法让提交按钮消失(并随后重新出现)。
以下代码供参考:
的index.html:
<form name="captions" ng-controller="CaptionCtrl>
<div class="current-page">
<div class="pages">
<div class="page active" id="page1">
<img src="images/blank_image.jpg">
<div class="page-form">
<span>“</span>
<input type="text" ng-model="user.caption1" size="130"
placeholder="Enter your caption here.">
<span>”</span>
<br>
<button class="page-form-submit" ng-click="pageShift(2)">NEXT</button> </div>
</div>
<div class="page" id="page2">
<img src="images/blank_image.jpg">
<div class="page-form">
<span>“</span>
<input type="text" ng-model="user.caption2" size="130"
placeholder="Enter your caption here.">
<span>”</span>
<br>
<button class="page-form-submit" ng-click="pageShift(3)">NEXT</button>
</div>
</div>
<div class="page" id="page3">
<img src="images/blank_image.jpg">
<div class="page-form">
<span>“</span>
<input type="text" ng-model="user.caption3" size="130"
placeholder="Enter your caption here.">
<span>”</span>
<br>
<button class="page-form-submit" ng-click="pageShift(4)">NEXT</button>
</div>
</div>
<div class="page" id="page4">
<img src="images/blank_image.jpg">
<div class="page-form-submit-page">
<h4>TO ENTER YOUR CAPTION IN THE CONTEST, TELL US YOUR NAME AND CONTACT METHOD.</h4>
<input type="text" ng-model="user.name" size="70" placeholder="Name" required>
<input type="email" ng-model="user.email" size="70" placeholder="E-mail Address" required>
<br>
<input type="checkbox" required>I have read and accept the Terms & Conditions
<br>
<input class="page-form-submit-page-submit" ng-disabled="captions | validateFields" ng-click="captionSubmit(user)" type="submit" value="SUBMIT">
</div>
</div>
<div class="page" id="page5">
<img src="images/blank_image.jpg">
<div class="page-form-thankyou">
<span><strong>THANK YOU</strong></span>
</div>
<div class="chapter-two-story-link"><span class="yellow">CLICK TO TELL US YOUR STORY</span></div>
</div>
</div>
</div>
</form>
如果你注意到底部,我有一个禁用ng设置&#34;字幕| validateFields&#34 ;.我用一个简单的声明来尝试这个,所以它不是我设置的过滤器。
编辑:通过反馈,我得到了我最初想用ng-show做的事情。但是,ng-disabled实际上更适合我想要的东西。我添加了相关的CSS。
的style.css
.page-form-submit-page-submit {
display: block;
padding: 5px 15px;
border: none;
border-radius: 2px;
margin: 40px 400px 20px auto;
text-align: center;
background-color: #001F45;
color: #FFD200;
}
.page-form-submit-page-submit:active {
background-color: #0250B0;
}
任何人都可以解释如何在所有字段都有效后才能显示提交按钮吗?
答案 0 :(得分:2)
如果表单无效,请尝试ng-enabled="captions.$valid"
禁用(可见但不可点击)和ng-show="captions.$valid"
以隐藏按钮。
有关角度形式的更多信息:https://docs.angularjs.org/api/ng/directive/form
答案 1 :(得分:1)
未经过测试,但您可以使用表单的$valid
属性:
<input class="page-form-submit-page-submit" ng-disabled="!captions.$valid" ng-click="captionSubmit(user)" type="submit" value="SUBMIT">
但如果您希望按钮完全消失,请使用ng-hide="!captions.$valid"
代替ng-disabled
指令
答案 2 :(得分:0)
这很容易
<input class="page-form-submit-page-submit" ng-if="captions.$valid" ng-click="captionSubmit(user)" type="submit" value="SUBMIT">
<input class="page-form-submit-page-submit" ng-disabled="captions.$invalid" ng-click="captionSubmit(user)" type="submit" value="SUBMIT">