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jquery - 遇到 VueJS 类绑定(bind)问题,使用 vuejs v2.0+ Bootstrap v3.3.7

转载 作者:搜寻专家 更新时间:2023-10-30 22:45:08 27 4
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好吧,我遇到了一个问题,虽然是一个奇怪的问题,但我到处都找不到答案。

我们被指派用 Vue.js 创建一个购物车,我已经完成了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,以使用 Bootstrap 即时创建警报,稍后我会在此处发布代码。问题是我想要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,类在某种程度上起作用,只有警告危险并且始终如此。我不知道为什么或我做错了什么,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,根据正在中断的代码创建了一个单独的 html/vuejs 页面......对象正在成功创建,问题出在页面输出的某个地方......代码会运行,但你会可能需要将实时 vue 副本链接到它,因为代码太多无法上传,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 &nbsp;
<input type="checkbox" name="alerttype1" v-model="newAlertObj.alerttypeInfo" /> Info Formatting &nbsp;
<input type="checkbox" name="alerttype2" v-model="newAlertObj.alerttypeWarn" /> Warn Formatting &nbsp;
<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 &nbsp;
<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)">&times;</button>
{{alerts[index].alertTitle}} &nbsp;
{{alerts[index].alertMsg}} &nbsp;

Success:{{alerts[index].alerttypeSuccess}}
Info:{{alerts[index].alerttypeInfo}}
Warn:{{alerts[index].alerttypeWarn}}
Danger:{{alerts[index].alerttypeDanger}}&nbsp;

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}} &nbsp; &nbsp;{{alerts[index].alertMsg}}</p>
</div>
</div>

</div>
</div>
</div>
<script src="testapp.js"></script>
</body>
</html>

我一直在用上面的代码进行调试,它似乎停止围绕 DIV id“everyonemessages”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......我一直在尽我所能尝试让它工作但不知所措......我会稍微编辑更多,但我认为现在这很好:

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,文档状态:

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" 为真,将计算为真。

因此,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 }">

另外,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 - 遇到 VueJS 类绑定(bind)问题,使用 vuejs v2.0+ Bootstrap v3.3.7,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/40921100/

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