I'm learning Vue.js. In my Vue, I have a text field and a button. By default, this button submits a form when someone presses the Enter key on their keyboard. When someone is typing in the text field, I want to capture each key pressed. If the key is an '@' symbol, I want to do something special. If the key pressed is the "Enter" key, I want to do something special as well. The latter is the one giving me challenges. Currently, I have this Fiddle, which includes this code:
new Vue({
el: '#myApp',
data: {
emailAddress: '',
log: ''
},
methods: {
validateEmailAddress: function(e) {
if (e.keyCode === 13) {
alert('Enter was pressed');
} else if (e.keyCode === 50) {
alert('@ was pressed');
}
this.log += e.key;
},
postEmailAddress: function() {
this.log += '\n\nPosting';
}
});
In my example, I can't seem to press the "Enter" key without it submitting the form. Yet, I would expect the validateEmailAddress function to at least fire first so that I could capture it. But, that does not seem to be happening. What am I doing wrong?
In vue 2, You can catch enter event with v-on:keyup.enter check the documentation:
I leave a very simple example:
var vm = new Vue({
el: '#app',
data: {msg: ''},
methods: {
onEnter: function() {
this.msg = 'on enter event';
}
}
});<script src="https://cdn.jsdelivr.net/npm/vue"></script>
<div id="app">
<input v-on:keyup.enter="onEnter" />
<h1>{{ msg }}</h1>
</div>Good luck
You can refer to event modifiers in vuejs to prevent form submission on enter key.
It is a very common need to call
event.preventDefault()orevent.stopPropagation()inside event handlers.Although we can do this easily inside methods, it would be better if the methods can be purely about data logic rather than having to deal with DOM event details.
To address this problem, Vue provides event modifiers for
v-on. Recall that modifiers are directive postfixes denoted by a dot.
<form v-on:submit.prevent="<method>">
...
</form>
As the documentation states, this is syntactical sugar for e.preventDefault() and will stop the unwanted form submission on press of enter key.
Here is a working fiddle.
new Vue({
el: '#myApp',
data: {
emailAddress: '',
log: ''
},
methods: {
validateEmailAddress: function(e) {
if (e.keyCode === 13) {
alert('Enter was pressed');
} else if (e.keyCode === 50) {
alert('@ was pressed');
}
this.log += e.key;
},
postEmailAddress: function() {
this.log += '\n\nPosting';
},
noop () {
// do nothing ?
}
}
})html, body, #editor {
margin: 0;
height: 100%;
color: #333;
}<script src="https://unpkg.com/vue@2.2.4/dist/vue.js"></script>
<div id="myApp" style="padding:2rem; background-color:#fff;">
<form v-on:submit.prevent="noop">
<input type="text" v-model="emailAddress" v-on:keyup="validateEmailAddress" />
<button type="button" v-on:click="postEmailAddress" >Subscribe</button>
<br /><br />
<textarea v-model="log" rows="4"></textarea>
</form>
</div>This event works to me:
@keyup.enter.native="onEnter".