I am new to Vue. When I use v-if, v-else-if, and v-else, the first two tags work well. But for v-else, it only change the context in {{}}.
html:
<div id="app">
<div v-if="isIf === 1">
isIf is 1：{{isIf}}
</div>
<div v-else-if="2">
isIf is 2：{{isIf}}
</div>
<div v-else>
isIf is not 1 or 2：{{isIf}}
</div>
</div>
js:
<script>
var app = new Vue({
el: '#app',
data: {
isIf: 1,
isShow: false
}
});
</script>
when I change the app.isIf=3 in console, it showed isIf is 2: 3. My last try is app.isIf=2, so it showed the context with last input. Any idea?
Your v-else-if condition is wrong - instead of
<div v-else-if="2">
it should be
<div v-else-if="isIf === 2">
Except for zero, any numerical value will be considered "true" in Javascripts. So your render logic is always around "v-if" and "v-else-if", it never reaches "v-else"
Related
I am using vuejs and I want to get the value of a div and display it inside of the model. Issue is i Cannot use the recommended refs because I in reality cant modify the html. Does anyone have a basic solution where I can leverage vuejs and push the content to the model where location is?
new Vue({
el: "#app",
data: {
location:''
},
methods: {
test:function(){
if (!this.$refs.myRef) {
console.log("This doesn't exist yet!");
}
}
}
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
<div id="FilePathPlaceholder" class="d2l-placeholder d2l-placeholder-live" aria-live="assertive">
<div class="d2l_1_234_979">
<div class="d2l_1_235_849 d2l_1_236_43 d2l-inline">
<span class="d2l-textblock"></span>
<span
class="d2l-textblock d2l_1_237_505 d2l_1_238_137"
id="d2l_1_233_684"
title="/content/Stuff/12183-CC-242/">
/content/Stuff/
<strong>12183-CC-242</strong>/
</span>
<input type="hidden" name="FilePath" id="FilePath" value="/content/Stuff/12183-CC-242/">
</div>
<div class="d2l_1_237_505 d2l-inline">
<span class="d2l-validator" id="d2l_1_239_562"></span>
</div>
</div>
</div>
</div>
I am trying to understand Vue. I am following vuejs.org
I am trying to make the below code work. But I am failing somewhere.
JSFiddle
I have the below code.
var vm = new Vue({
"el":"#app1",
"data":{
showme:true
}
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div v-if="showme" id="app1">
<div id="app2">
IF is true
</div>
</div>
<div v-else id="app3">
Else is happening
</div>
A Vue app attaches itself to a single DOM element (#app1 in our case) then fully controls it. The HTML is our entry point, but everything else happens within the newly created Vue instance.
<div id="app1">
<div v-if="showme">
<div id="app2">
IF is true
</div>
</div>
<div v-else id="app3">
Else is happening
</div>
</div>
var vm = new Vue({
"el":"#app1",
"data":{
showme:false
}
})
I have this couple of 'cards' with this content
<div class='card'>
<span>title one </span>
<button #click='open = !open'>show</button>
</div>
<div class='card'>
<span>title two </span>
<button #click='open = !open'>show</button>
</div>
Where in the same component I show this modal. What i need to show inside of it is if I click the first button, show title one, if I click button 2,show title 2 and so on...
What will be the best approach to do this task? (show in modal the card content)
First a couple of things:
ooen might be a typo, did you mean open?
=! looks like a single operator but it actually means open = !open in this context. Put a space between the = and ! to make it clear what it means.
If you want to control the visibility of two sections independently then you will need two separate data properties (open1 and open2). Use v-if or v-show to control the visibility.
new Vue({
el: '#app',
data: {
open1: false,
open2: false,
}
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
<div class="card">
<span v-if="open1">title 1</span>
<button #click="open1 = !open1">toggle</button>
</div>
<div class="card">
<span v-if="open2">title 2</span>
<button #click="open2 = !open2">toggle</button>
</div>
</div>
If you will have lots of these, then wrap the functionality into a separate component so you don't have to define open1, open2, ... and so on.
Vue.component('card', {
template: `
<div class="card">
<span v-if="open"><slot/></span>
<button #click="open = !open">toggle</button>
</div>`,
data() {
return {
open: false
}
}
})
new Vue({
el: '#app'
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
<card>title 1</card>
<card>title 2</card>
</div>
I found the solution.
Create the cards data into a array of objects in the data instance
Use a v-for to loop through the cards
Create a method that capture the card clicked, create a projectSelected value in data
<button #click="showModal = !showModal,open(project)">Open</button>
captureProject(card) {
this.projectSelected = project;
},
Show the selected project inside the modal
{{ projectSelected .title }}
I am confused on how to hide and show 3 divs according to the click.
I have been able to show and hide 2 divs with v-show but v-show does not apply I think for more than 2 divs.
This is my code without vuejs, because I don't understand how to render with v-else-if
<div id="element_one">
ONE
<a>Go to two</a>
<a>Go to three</a>
Some content
</div>
<div id="element_two>
<a>Go back to one</a>
Some content
</div>
<div id="element_three>
<a>Go back to one</a>
Some content
</div>
app.js could be like this?
new Vue({
el: '#app',
data: {
isOne: true,
isTwo: true,
isThree: true
}
});
Sorry, I understand is a basic question but if you could guide me.
I saw what there is about v-else-if in the documentation but it is still not clear to me how to apply it.
I understand that each div applies a display none to it and when it is activated it disappears.
So basically it is, that two divs are in display none when the div that I accessed through its corresponding button is activated.
Thank you.
for using v if directive
<p v-if="inStock">{{product}}</p>
<p v-else-if="onSale">..</p>
<p v-else-if="onSale">..</p>
<p v-else-if="onSale">..</p>
and so on and the last is what`s below
<p v-else>..</>
you can also use v-show(note this toggles css property display:none)
<p v-show="showProductDetails">..</p>
<div id="element_one" v-if="visibleDivId == 1">
ONE
<a #click="showDivById(2)">Go to two</a>
<a #click="showDivById(3)>Go to three</a>
Some content
</div>
<div id="element_two v-if="visibleDivId == 2">
<a #click="showDivById(1)">Go back to one</a>
Some content
</div>
<div id="element_three v-if="visibleDivId == 3">
<a #click="showDivById(1)">Go back to one</a>
Some content
</div>
new Vue({
el: '#app',
data: {
visibleDivId: 1,
},
methods: {
showDivById(divId) {
this.visibleDivId = divId
}
}
});
You can write a function and use it to show or hide div on click.
Below code only works when "'test'" is inside a double and single quote like this: v-b-modal="'test'"
Sample working code:
<div id="app">
<div>
<b-link v-b-modal="'test'">Click to Test Modal</b-link>
</div>
<b-modal id="test" title="Bootstrap Vue Modal 2">
<p class="my-4">Testing Bootstrap Vue Modal Without</p>
</b-modal>
</div>
But, what if I want to use a value of a data property, like below example. If I use :v-b-modal="'name'", it uses "name" instead of "testModal".
<div id="app">
<div>
<b-link :v-b-modal="name">Click to Test Modal</b-link>
</div>
<b-modal :id="name" title="Bootstrap Vue Modal">
<p class="my-4">Testing Bootstrap Vue Modal</p>
</b-modal>
</div>
<script>
new Vue({
el: '#app',
data: {
name: 'testModal'
}
})
</script>
Any help is appreciated on how to use a value of a data property inside v-b-modal.
You just have to remove the two dots v-b-modal="name" and it is going to work.
You can see on this codepen.