好吧，我遇到了一个问题，虽然很奇怪，但我已经查遍了，似乎找不到答案。
我们被分配用 Vue.js 创建一个购物车，我已经完成了这个项目，我自己开始了这个项目，想看看我能用 vuejs 做什么。问题出现在页面加载后，访问“管理”面板，我创建了一个警报管理器，使用 Bootstrap 动态创建警报，稍后我将在此处发布代码。问题是我想要有复选框值并使用该选择来输入正确的警报类别，即“警报警报成功”。
我正在使用Bind，奇怪的是，这些类可以工作，只有警报危险并且始终如此。我不知道为什么或者我做错了什么，需要一双新的眼睛，也许我们可以让它发挥作用。下面是我修改后的代码，根据破坏的代码创建了一个单独的 html/vuejs 页面...对象已成功创建，问题出在页面输出中的某处...代码将运行，但您会可能需要将实时 vue 副本链接到它，因为代码太多而无法上传，CDN 2.0.3 或更高版本应该可以工作。
//I have the VueJS file downloaded, and in the root folder... but dont want to upload this file to teh site due to the shear size. I am useing VueJS v2.1.2 i think, but it is definitly between 2.0.3 and 2.1.2
//this is the code only pertaining to the part that is breaking...
myAPP = new Vue({
el: '#testapp',
data:{
alerts: [],
newAlertObj: {
alertTitle:'',
alertMsg:'',
alerttypeSuccess:false,
alerttypeInfo:false,
alerttypeWarn:false,
alerttypeDanger:false,
alerttypeDismiss:false,
alerttypeAnimate:false
},
alertadd:false,
//radio options for alert add [[No longer used as the object is being created as far as i can tell correctly]]//
/*
isSuccess:false,
isInfo:false,
isWarn:false,
isDanger:false,
//for check boxes//
isAnimated:false,
isDismissable:false*/
},
methods:{
addAlertObj:function (){
console.log(this.alerts.push(this.newAlertObj))
//debug
console.log(this.newAlertObj.alerttypeSuccess)
console.log(this.newAlertObj.alerttypeInfo)
console.log(this.newAlertObj.alerttypeWarn)
console.log(this.newAlertObj.alerttypeDanger)
console.log(this.newAlertObj.alerttypeDismiss)
console.log(this.newAlertObj.alerttypeAnimate)
this.newAlertObj={alertTitle:'',alertMsg:'',alerttypeSuccess:false,alerttypeInfo:false,alerttypeWarn:false,alerttypeDanger:false,alerttypeDismiss:false,alerttypeAnimate:false}
},
togglealertadder: function (){
if (this.alertadd){
this.alertadd=false
this.newAlertObj={alertTitle:'',alertMsg:'',alerttypeSuccess:false,alerttypeInfo:false,alerttypeWarn:false,alerttypeDanger:false,alerttypeDismiss:false,alerttypeAnimate:false}
}else{
this.alertadd=true
}
}
}
});<! DOCTYPE html>
<html lang="en" charset="utf-8">
<head>
<title>Test App</title>
<script src="https://code.jquery.com/jquery-3.1.1.min.js" integrity="sha256-hVVnYaiADRTO2PzUGmuLJr8BLUSjGIZsDYGmIJLv2b8=" crossorigin="anonymous"></script> <!--jquery cdn-->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="style.css"> <!--site deffinitions and styles-->
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.1.4/vue.js"></script>
</head>
<body>
<div class="container">
<div class="container-fluid">
<!-- test of the alert creation elements only goes here -->
<div id="testapp">
<div id="AlertsNMessages">
<!-- Log in state only messages -->
<p class="alert alert-warning"><span style="font-weight:bold;">WARNING! </span> You are logged into ADMIN mode, remember to logout</p>
<div class = "row">
<div class="col-sm-2"></div>
<div class="col-sm-8">
<div class="panel panel-default">
<div class="panel-heading">
<button type="button" class="btn btn-primary btn-block" @click="togglealertadder">Manage Alerts</button>
</div>
<div class="panel-body" v-if="alertadd">
<div class="form-group">
Alert Content:
<input class="form-control" placeholder="Alert Title" v-model="newAlertObj.alertTitle" /><br />
<input class="form-control" placeholder="Alert Text" v-model="newAlertObj.alertMsg" /><br />
Alert Options (Only select ONE option below!):<br />
<input type="checkbox" name="alerttype" v-model="newAlertObj.alerttypeSuccess"/> Sucess Formatting
<input type="checkbox" name="alerttype1" v-model="newAlertObj.alerttypeInfo" /> Info Formatting
<input type="checkbox" name="alerttype2" v-model="newAlertObj.alerttypeWarn" /> Warn Formatting
<input type="checkbox" name="alerttype3" v-model="newAlertObj.alerttypeDanger" /> Danger Formating<br /><br />
Alert Optional Options:<br />
<input type="checkbox" class="" v-model="newAlertObj.alerttypeDismiss" /> Dismissable
<input type="checkbox" class="" v-model="newAlertObj.alerttypeAnimate" /> Animate <br /><br />
<button type="button" class="btn btn-primary" @click="addAlertObj">Create Alert</button>
</div>
{{newAlertObj.alerttypeSuccess}}
{{newAlertObj.alerttypeInfo}}
{{newAlertObj.alerttypeWarn}}
{{newAlertObj.alerttypeDanger}}
<h4>Alerts and Message Administration:</h4>
<div id="testing" v-for="(item,index) in alerts">
<li style="list-style-type:none;">
<button type="button" class="btn btn-danger" @click="alerts.splice(index,1)">×</button>
{{alerts[index].alertTitle}}
{{alerts[index].alertMsg}}
Success:{{alerts[index].alerttypeSuccess}}
Info:{{alerts[index].alerttypeInfo}}
Warn:{{alerts[index].alerttypeWarn}}
Danger:{{alerts[index].alerttypeDanger}}
Animate:{{alerts[index].alerttypeAnimate}}
Dismiss:{{alerts[index].alerttypeDismiss}}
</li><br />
</div>
</div>
</div>
</div>
<div class="col-sm-2"></div>
</div>
<!-- everybody messages -->
<!-- It is here that the opbject gets translated to the page based on the opbject values.-->
<!-- alert is a static class, the :class are the dynamic whih just format the alert apearence... but it shows only text. -->
<div id="everybodymessages" v-for="(item,index) in alerts">
<p class="alert"
:class="{
'alert-sucess':alerts[index].alerttypeSuccess,
'alert-info':alerts[index].alerttypeInfo,
'alert-warning':alerts[index].alerttypeWarn,
'alert-danger':alerts[index].alerttypeDanger
}">
{{alerts[index].alertTitle}} {{alerts[index].alertMsg}}</p>
</div>
</div>
</div>
</div>
</div>
<script src="testapp.js"></script>
</body>
</html>我一直在使用上面的代码进行调试，它似乎停止了围绕 DIV id“everyonemessages”的工作。生成时，代码应该呈现引导消息警报，其中从复选框中选择类并绑定(bind)到静态警报类。但是在 html 上打印的所有内容都是纯文本...我一直在尽一切努力尝试让它工作，但我不知所措...我稍后会编辑更多内容，但我认为现在这样很好:
感谢您的帖子， 杰西·F
最佳答案
看起来您正在尝试使用对象语法来绑定(bind)类( link to docs here )。特别是，文档指出:
We can pass an object to v-bind:class to dynamically toggle classes:
<div v-bind:class="{ active: isActive }"></div>The above syntax means the presence of the active class will be determined by the truthiness of the data property isActive.
请注意，字符串“false”与 bool 值false不同。字符串 "false" 为 true，并且计算结果为 true。
所以，我的猜测是您需要从 :class 代码中删除 toString() :
<p class="alert"
:class="{
'alert-success':alerts[index].alerttypeSuccess,
'alert-info':alerts[index].alerttypeInfo,
'alert-warning':alerts[index].alerttypeWarn,
'alert-danger':alerts[index].alerttypeDanger }">
另请注意，您为成功警报的类编写了 alert-sucess。它应该是 alert-success (两个 c)。
关于jquery - 使用 vuejs v2.0+ Bootstrap v3.3.7 时遇到 VueJS 类绑定(bind)问题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/40921100/