Is it possible to achieve the following using (Pug & CoffeeScript):
input(placeholder="0", v-model.number="order[index]" v-on:change="adjustInput")
...
adjustInput: ->
event.target.style.width = event.target.value.length + 'ch'
Even though this code works when manually changing the input in the browser, it doesn't update the width if the change is made through v-model. How can I ensure that the input width adjusts even when the change is due to Vue reactivity?
Take a look at this code snippet, but make sure to double-check the font size for both the input and the fake_div element.
var app = new Vue({
el: '#app',
data() {
return {
order: 1, // your value
fakeDivWidth: 10, // initial width set to 10px for input
};
},
watch: {
order: { // listen for changes in input value
handler(val) {
this.inputResize();
},
},
},
methods: {
inputResize() {
setTimeout(() => {
this.fakeDivWidth = this.$el.querySelector('.fake_div').clientWidth;
}, 0);
},
},
}).fake_div {
position: absolute;
left: -100500vw;
top: -100500vh;
}<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
<input placeholder="0" v-model.number="order" v-bind:style="{width: fakeDivWidth + 'px'}" >
<div class="fake_div">{{ order }}</div> // fake_div is necessary to match input width
// This block serves as a visual aid to ensure the input width matches that of the div
</div>Give this a try:
input(placeholder="0", v-model.number="order[index]" v-on:change="adjustInput" :style="{width: reactiveWidth}")
// Your secret Vue code
data() {
return function() {
reactiveWidth: 100px; // (some default value)
}
},
methods: {
adjustInput() {
this.reactiveWidth = event.target.value.length + 'ch'
}
},
computed: {
reactiveWidth() {
return this.number + 'ch';
}
}
The code provided may need some adjustments since I don't have all the details. By simply binding this.number to order[index], the input width is not being affected. The computed property monitors changes in number.
A simple solution for me would be to utilize a contenteditable span instead of the input field to encase the text:
<script setup>
import {reactive} from 'vue'
const state = reactive({
input: 'The width of this will adjust based on the text entered'
})
</script>
<template>
<span class="input" @input="e => state.input = e.target.innerText" contenteditable>{{state.input}}</span>
</template>
This mirrors the functionality of v-model=state.input
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