VueJs reference selected object
I am trying to display a fullName function using selected value
HTML :
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person.about">
{{ person.lname }}
</option>
</select>
<p> {{ selected }} </p>
JS
New Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed :{
sayHi : function() {
return this.fname + " " + this.lname
}
}
})
h1 should return based on selected object value,
this code returns undefined,(doesnt run at all if I pass in selected as arg) although the other parts work.Im not sure how to get the computed function to reference the selected object?
Edit:After using the great suggestions,Added a codepen for anyone else who is just starting:
https://codepen.io/2f2f/pen/rQdKKw
javascript vue.js
asked Nov 24 '18 at 6:51
dan browndan brown
6817
add a comment |
I am trying to display a fullName function using selected value
HTML :
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person.about">
{{ person.lname }}
</option>
</select>
<p> {{ selected }} </p>
JS
New Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed :{
sayHi : function() {
return this.fname + " " + this.lname
}
}
})
h1 should return based on selected object value,
this code returns undefined,(doesnt run at all if I pass in selected as arg) although the other parts work.Im not sure how to get the computed function to reference the selected object?
Edit:After using the great suggestions,Added a codepen for anyone else who is just starting:
https://codepen.io/2f2f/pen/rQdKKw
javascript vue.js
asked Nov 24 '18 at 6:51
dan browndan brown
6817
add a comment |
I am trying to display a fullName function using selected value
HTML :
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person.about">
{{ person.lname }}
</option>
</select>
<p> {{ selected }} </p>
JS
New Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed :{
sayHi : function() {
return this.fname + " " + this.lname
}
}
})
h1 should return based on selected object value,
this code returns undefined,(doesnt run at all if I pass in selected as arg) although the other parts work.Im not sure how to get the computed function to reference the selected object?
Edit:After using the great suggestions,Added a codepen for anyone else who is just starting:
https://codepen.io/2f2f/pen/rQdKKw
javascript vue.js
asked Nov 24 '18 at 6:51
dan browndan brown
6817
I am trying to display a fullName function using selected value
HTML :
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person.about">
{{ person.lname }}
</option>
</select>
<p> {{ selected }} </p>
JS
New Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed :{
sayHi : function() {
return this.fname + " " + this.lname
}
}
})
h1 should return based on selected object value,
this code returns undefined,(doesnt run at all if I pass in selected as arg) although the other parts work.Im not sure how to get the computed function to reference the selected object?
Edit:After using the great suggestions,Added a codepen for anyone else who is just starting:
https://codepen.io/2f2f/pen/rQdKKw
javascript vue.js
javascript vue.js
asked Nov 24 '18 at 6:51
dan browndan brown
6817
asked Nov 24 '18 at 6:51
dan browndan brown
6817
edited Nov 24 '18 at 11:00
dan brown
asked Nov 24 '18 at 6:51
dan browndan brown
6817
asked Nov 24 '18 at 6:51
dan browndan brown
6817
asked Nov 24 '18 at 6:51
dan browndan brown
6817
6817
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
Code returns undefined because there is no this.fname, nor this.lname - it refers to data object, which has only selected and persons.
You can use selected as holder for person from the loop, so in your method you can get person first and last names, but you need to modify bind value.
Try this:
new Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed :{
sayHi : function() {
return this.selected.fname + " " + this.selected.lname
}
}
});<script src="https://unpkg.com/vue"></script>
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person">
{{ person.lname }}
</option>
</select>
<p> {{ selected.about }} </p>
</div>answered Nov 24 '18 at 7:09
GasanovGasanov
34328
add a comment |
fname and lname are not defined in data, so this.fname and this.lname are always undefined; You need to find the selected person object first based on the selected value, and then compute the full name from the fname and lname.
new Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed: {
sayHi: function() {
var selectedP = this.persons.find(p => p.about === this.selected)
return selectedP ? selectedP.fname + " " + selectedP.lname : ''
}
}
})<script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person.about">
{{ person.lname }}
</option>
</select>
<p> {{ selected }} </p>
</div>answered Nov 24 '18 at 7:08
PsidomPsidom
126k1290134
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Code returns undefined because there is no this.fname, nor this.lname - it refers to data object, which has only selected and persons.
You can use selected as holder for person from the loop, so in your method you can get person first and last names, but you need to modify bind value.
Try this:
new Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed :{
sayHi : function() {
return this.selected.fname + " " + this.selected.lname
}
}
});<script src="https://unpkg.com/vue"></script>
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person">
{{ person.lname }}
</option>
</select>
<p> {{ selected.about }} </p>
</div>answered Nov 24 '18 at 7:09
GasanovGasanov
34328
add a comment |
Code returns undefined because there is no this.fname, nor this.lname - it refers to data object, which has only selected and persons.
You can use selected as holder for person from the loop, so in your method you can get person first and last names, but you need to modify bind value.
Try this:
new Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed :{
sayHi : function() {
return this.selected.fname + " " + this.selected.lname
}
}
});<script src="https://unpkg.com/vue"></script>
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person">
{{ person.lname }}
</option>
</select>
<p> {{ selected.about }} </p>
</div>answered Nov 24 '18 at 7:09
GasanovGasanov
34328
add a comment |
Code returns undefined because there is no this.fname, nor this.lname - it refers to data object, which has only selected and persons.
You can use selected as holder for person from the loop, so in your method you can get person first and last names, but you need to modify bind value.
Try this:
new Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed :{
sayHi : function() {
return this.selected.fname + " " + this.selected.lname
}
}
});<script src="https://unpkg.com/vue"></script>
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person">
{{ person.lname }}
</option>
</select>
<p> {{ selected.about }} </p>
</div>answered Nov 24 '18 at 7:09
GasanovGasanov
34328
Code returns undefined because there is no this.fname, nor this.lname - it refers to data object, which has only selected and persons.
You can use selected as holder for person from the loop, so in your method you can get person first and last names, but you need to modify bind value.
Try this:
new Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed :{
sayHi : function() {
return this.selected.fname + " " + this.selected.lname
}
}
});<script src="https://unpkg.com/vue"></script>
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person">
{{ person.lname }}
</option>
</select>
<p> {{ selected.about }} </p>
</div>new Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed :{
sayHi : function() {
return this.selected.fname + " " + this.selected.lname
}
}
});<script src="https://unpkg.com/vue"></script>
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person">
{{ person.lname }}
</option>
</select>
<p> {{ selected.about }} </p>
</div>new Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed :{
sayHi : function() {
return this.selected.fname + " " + this.selected.lname
}
}
});<script src="https://unpkg.com/vue"></script>
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person">
{{ person.lname }}
</option>
</select>
<p> {{ selected.about }} </p>
</div>answered Nov 24 '18 at 7:09
GasanovGasanov
34328
answered Nov 24 '18 at 7:09
GasanovGasanov
34328
answered Nov 24 '18 at 7:09
GasanovGasanov
34328
answered Nov 24 '18 at 7:09
GasanovGasanov
34328
34328
add a comment |
add a comment |
fname and lname are not defined in data, so this.fname and this.lname are always undefined; You need to find the selected person object first based on the selected value, and then compute the full name from the fname and lname.
new Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed: {
sayHi: function() {
var selectedP = this.persons.find(p => p.about === this.selected)
return selectedP ? selectedP.fname + " " + selectedP.lname : ''
}
}
})<script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person.about">
{{ person.lname }}
</option>
</select>
<p> {{ selected }} </p>
</div>answered Nov 24 '18 at 7:08
PsidomPsidom
126k1290134
add a comment |
fname and lname are not defined in data, so this.fname and this.lname are always undefined; You need to find the selected person object first based on the selected value, and then compute the full name from the fname and lname.
new Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed: {
sayHi: function() {
var selectedP = this.persons.find(p => p.about === this.selected)
return selectedP ? selectedP.fname + " " + selectedP.lname : ''
}
}
})<script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person.about">
{{ person.lname }}
</option>
</select>
<p> {{ selected }} </p>
</div>answered Nov 24 '18 at 7:08
PsidomPsidom
126k1290134
add a comment |
fname and lname are not defined in data, so this.fname and this.lname are always undefined; You need to find the selected person object first based on the selected value, and then compute the full name from the fname and lname.
new Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed: {
sayHi: function() {
var selectedP = this.persons.find(p => p.about === this.selected)
return selectedP ? selectedP.fname + " " + selectedP.lname : ''
}
}
})<script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person.about">
{{ person.lname }}
</option>
</select>
<p> {{ selected }} </p>
</div>answered Nov 24 '18 at 7:08
PsidomPsidom
126k1290134
fname and lname are not defined in data, so this.fname and this.lname are always undefined; You need to find the selected person object first based on the selected value, and then compute the full name from the fname and lname.
new Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed: {
sayHi: function() {
var selectedP = this.persons.find(p => p.about === this.selected)
return selectedP ? selectedP.fname + " " + selectedP.lname : ''
}
}
})<script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person.about">
{{ person.lname }}
</option>
</select>
<p> {{ selected }} </p>
</div>new Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed: {
sayHi: function() {
var selectedP = this.persons.find(p => p.about === this.selected)
return selectedP ? selectedP.fname + " " + selectedP.lname : ''
}
}
})<script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person.about">
{{ person.lname }}
</option>
</select>
<p> {{ selected }} </p>
</div>new Vue({
el: '#test',
data: {
selected : '',
persons: [
{ fname: 'Foo' ,
lname : 'Foo2',
about : 'loren ipsum'},
{ fname: 'Bar' ,
lname:'Bar2',
about: 'dolor met'}
]
},
computed: {
sayHi: function() {
var selectedP = this.persons.find(p => p.about === this.selected)
return selectedP ? selectedP.fname + " " + selectedP.lname : ''
}
}
})<script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
<div id="test">
<h1>{{ sayHi }}</h1>
<select v-model="selected">
<option v-for="person in persons" v-bind:value="person.about">
{{ person.lname }}
</option>
</select>
<p> {{ selected }} </p>
</div>answered Nov 24 '18 at 7:08
PsidomPsidom
126k1290134
answered Nov 24 '18 at 7:08
PsidomPsidom
126k1290134
answered Nov 24 '18 at 7:08
PsidomPsidom
126k1290134
answered Nov 24 '18 at 7:08
PsidomPsidom
126k1290134
126k1290134
add a comment |
add a comment |
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