I am attempting to implement a button that will shift the focus of an input field.
My approach involves using v-bind:autofocus and updating the values of box1 and box2.
<input type="text" placeholder="box1" v-bind:autofocus="box1">
<input type="text" placeholder="box2" v-bind:autofocus="box2">Enabling the autofocus attribute on a form control ensures it receives input focus upon page load.
To set focus using focus(), you must have something to invoke this method on the intended element. This can be achieved through a directive like nextTick to ensure correct initial focus assignment.
var data = {
whichHasFocus: 'box1'
}
var demo = new Vue({
el: '#demo',
data: data,
methods: {
changeFocus() {
this.whichHasFocus = this.whichHasFocus == 'box1' ? 'box2' : 'box1';
}
},
directives: {
focusIf(el, binding) {
if (binding.arg === binding.value) {
Vue.nextTick(() => el.focus());
}
}
}
})<script src="//unpkg.com/vue@latest/dist/vue.js"></script>
<div id="demo">
<input type="text" placeholder="box1" v-focus-if:box1="whichHasFocus"><br>
<input type="text" placeholder="box2" v-focus-if:box2="whichHasFocus"><br>
<button @click="changeFocus()">Change Focus</button>
</div>If you want to create a custom command using the directives attribute, you can focus on an element based on your data binding state (such as box1/box2).
To explore this further, check out Vue Focus.
var demo = new Vue({
el: '#demo',
data: {
box1: true,
box2: false
},
methods: {
changeFocus() {
this.box1 = false;
this.box2 = true;
}
},
directives: {
focus: {
update: function (el, {value}) {
if (value) {
el.focus()
}
}
}
},
})<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.13/vue.js"></script>
<html>
<body>
<div id="demo">
<input type="text" placeholder="box1" v-focus="box1" @blur="box1 = false"><br>
<input type="text" placeholder="box2" v-focus="box2" @blur="box2 = false"><br>
<button @click="changeFocus()">Change Focus</button>
</div>
</body>
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