To watch the height of an element in Vue.js, you can use a combination of Vue’s reactivity system and DOM manipulation.
We can do the following:
Template
Add a reference to the element whose height you want to watch.
<template>
<div ref="elementToWatch">
<!-- Your content here -->
</div>
</template>
Script
Set up a watcher to monitor changes in the height of the element.
<script>
export default {
data() {
return {
elementHeight: 0
};
},
mounted() {
// Call the method to get the initial height
this.getElementHeight();
// Listen for resize events
window.addEventListener('resize', this.getElementHeight);
},
beforeDestroy() {
// Remove the resize event listener to prevent memory leaks
window.removeEventListener('resize', this.getElementHeight);
},
methods: {
getElementHeight() {
// Access the element using the ref and get its height
const element = this.$refs.elementToWatch;
if (element) {
this.elementHeight = element.clientHeight;
}
}
}
};
</script>
Template Usage
Display or use the elementHeight variable wherever you need it in your template.
<template>
<div>
The height of the element is: {{ elementHeight }}px
</div>
</template>
This approach ensures that whenever the height of the element changes (due to window resizing or dynamic content changes), the elementHeight variable is updated accordingly.
