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Vue.JS - how to use localStorage with Vue.JS
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Closed last year.
Hi i'm starting to use vue and javascript from some day and i need to do an example of form for my "exame".
I would like to save locally the data entered by users and use this data and enter them on another page. Do I have to use a database?
(user enter "name" and in the next page "welcome (name)").
This is part of my code:
<label>Nome:</label>
<input type="text" required v-model="nome">
<div class="submit">
<button>Iscriviti!</button>
export default {
data() {
return {
nome: '',
}
},
methods: {
inviaForm() {
console.log('form inviato')
}
}
Sorry for my english, i'm so bad
Page 1
<template>
<div>
<label>Nome:</label>
<input type="text" required v-model="nome">
<div class="submit">
<button #click="inviaForm">Iscriviti!</button>
</div>
</template>
<script>
export default {
data() {
return {
nome: '',
}
},
methods: {
inviaForm() {
localStorage.setItem('nome',this.nome)
}
}
</script>
Page 2
<template>
<div>
<div>Name is: {{nome}}</div>
</template>
<script>
export default {
data() {
return {
nome: '',
}
},
mounted() {
this.nome = localStorage.getItem('nome');
}
}
</script>
this may help -- just the snippet that would store the name. I reckon you're not into reactive / vuex states, so try this (and in your other component use onMount() { this.nome = localStorage.getItem('name') } to retrieve. You'll figure it out.
<form #submit="inviaForm">
<label>Nome:</label>
<input type="text" required v-model="nome">
<button>Iscriviti!</button>
</form>
export default {
data() {
return {
nome: '',
}
},
methods: {
inviaForm() {
localStorage.setItem('name', this.nome)
}
}
.
Related
I have a parent form template and each question of the form is inside a child component, like this
<template>
<question1
#display-answer-1="setAnswer1"
/>
<!-- other child components here... -->
</template>
<script>
import Question1 from '...path...';
export default{
components: { Question1 },
data() {
answer1: ''
},
methods: {
setAnswer1(answer1) {
this.answer1 = answer1;
}
}
};
and my child component is like this
<template>
<input type="text" v-model="answer1"/>
<div>
<button
type="button"
#click="saveQ2"
>Save
</button>
</div>
</template>
<script>
export default {
data() {
return {
answer1: ''
};
},
methods: {
saveQ2() {
const answer1 = this.answer1;
this.$emit('display-answer-1', answer1);
}
}
};
This code works, but in this way I'm forced to put a button whenever there is a question to pass data from the child to the form template parent. Is there a smart alternative not to put a save button under each question?
you can use the blur event whenever an input gets unfocused it'll fire the event .
<template>
<input #blur="saveQ2" type="text" v-model="answer1"/>
</template>
<script>
export default {
data() {
return {
answer1: ''
};
},
methods: {
saveQ2() {
const answer1 = this.answer1;
this.$emit('display-answer-1', answer1);
}
}
};
I have an input component that should call a method getUserSearch when the user types, and update the variable v_on_search with the variable v_model_search value.
I am displaying the content with the variables: v_model_search and v_on_search to test, although only the v-model seems to be working.
<template>
<div>
<input type="text" placeholder="search here" v-model="v_model_search" v-on:oninput="getUserSearch()">
<p>{{v_model_search}}</p>
<p>{{v_on_search}}</p>
</div>
</template>
<script>
export default {
name: 'SearchBox',
data () {
return {
v_model_search: '',
v_on_search: ''
}
},
methods: {
getUserSearch ()
{
this.v_on_search = this.v_model_search
}
}
}
</script>
Try
v-on:input="getUserSearch()"
or shorter
#input="getUserSearch()"
Vue recognizes HTML events but they don't have the "on" prefix
I want to search for elements using an input field within a form. I am passing a value from a component to another and the content changes but only after pressing enter. Is there a way to automatically update the list, after every new letter is typed?
Here is my code:
Parent(App):
<template>
<div id="app">
<Header v-on:phrase-search="passPhrase" />
</div>
</template>
<script>
import Header from ...
export default {
name: "App",
components: {
Header,
},
data() {
return {
posts: [],
searchedPhrase: ""
};
}
computed: {
filteredPosts() {
let temp_text = this.searchedPhrase;
temp_text.trim().toLowerCase();
return this.posts.filter(post => {
return post.name.toLowerCase().match(temp_text);
});
}
},
methods: {
passPhrase(phrase) {
this.searchedPhrase = phrase;
}
}
};
</script>
Child(Header):
<template>
<div class="child">
<p>Search:</p>
<form #submit.prevent="phrasePassed">
<input type="text" v-model="phrase" />
</form>
</div>
</template>
<script>
export default {
name: "search",
data() {
return {
phrase: ""
};
},
methods: {
phrasePassed() {
this.$emit("phrase-search", this.phrase);
}
}
};
</script>
passPhrase() brings the value from the child to the parent and then filteredPosts() find appropriate elements. I suspect that the form might be guilty of this issue but I do not know precisely how to get rid of it and still be able to pass the value to the parent.
Thanks
in the child you use submit event which called on enter. you should use #input on the input itself. and btw you didnt need even to declare pharse in the data because you didnt use it in the child. you just pass it up
you it like so
<template>
<div class="child">
<p>Search:</p>
<form>
<input type="text" #input="phrasePassed">
</form>
</div>
</template>
<script>
export default {
name: "search",
methods: {
phrasePassed(e) {
this.$emit("phrase-search", e.target.value);
}
}
};
</script>
I have a simple form component:
<template>
<div>
<form #submit.prevent="addItem">
<input type="text" v-model="text">
<input type="hidden" v-model="id">
<input type="submit" value="enviar">
</form>
</div>
</template>
This component has a method that use $emit to add text item to a parent data:
addItem () {
const { text } = this
this.$emit('block', text)
},
Here is markup on my main file:
<template>
<div id="app">
<BlockForm #block="addBlock"/>
<Message v-bind:message="message"/>
</div>
</template>
And the script:
export default {
name: 'app',
components: {
BlockForm,
Message
},
data () {
return {
message : []
}
},
methods: {
addBlock (text) {
const { message } = this
const key = message.length
message.push({
name: text,
order: key
})
}
}
}
My question is: Message component list all items create by BlockForm component and stored inside message array. I add a edit button for each item inside Message list. How can I pass item text to be edited in BlockForm component?
You could just bind the input inside the BlockForm to a variable that is in the parent component. This way when you $emit from the child component, just add the value to the messages.
export default {
name: 'app',
components: {
BlockForm,
Message
},
data () {
return {
message : [],
inputVal: {
text: '',
id: ''
}
}
},
methods: {
addBlock () {
const key = this.message.length
this.message.push({
name: this.inputVal.text,
order: this.inputVal.text.length // If the logic is different here, you can just change it
})
this.inputVal = {
text: '',
id: ''
}
}
}
}
Now when you are calling the BlockForm,
<template>
<div id="app">
<BlockForm propVal="inputVal" #block="addBlock"/>
<Message v-bind:message="message"/>
</div>
</template>
and inside BlockForm,
<template>
<div>
<form #submit.prevent="addItem">
<input type="text" v-model="propVal.text">
<input type="hidden" v-model="probVal.id">
<input type="submit" value="enviar">
</form>
</div>
</template>
Now, when you press edit for existing message, simple assign that "Message" to inputVal data property mapping it to proper text and id.
I am trying to pass a props value and an form value to the backend controller using axios. But it only sends form value not the props value. My code is -
<template>
<form #submit.prevent='onSubmit'>
<div class="media-comment">
<input type="text" v-model='form.comment' class="form-control" placeholder="comment...">
</div>
</form>
</template>
<script>
export default {
props: ['postId'],
data() {
return {
form: new Form({comment: ''}),
id: this.postId
}
},
methods: {
onSubmit() {
console.log(this.postId); // it shows the value in console but the value doesnt pass
this.form
.post('comments', this.data)
.then(post => this.$emit('completed', comment));
}
}
}
</script>
in console it shows only the comment, not the prop value:
How to pass both value ??
thanks in advance
here i got the solution.
<template>
<form #submit.prevent='onSubmit'>
<div class="media-comment">
<input type="text" v-model='comment' class="form-control" placeholder="comment...">
</div>
</form>
</template>
<script>
export default {
props: ['postId'],
data() {
return {
comment: ''
}
},
methods: {
onSubmit() {
axios.post('comments', {comment: this.comment, id: this.postId})
.then(post => this.$emit('completed', comment));
}
}
}
</script>