Vue Js Check If All The Arrays Inside An Array Of Arrays Are Empty: To check if all the arrays inside an array of arrays are empty in Vue.js, you can use the every
method in combination with the length
property. The every
method returns true
if all the elements in an array pass a certain test, and the length
property returns the number of elements in an array. Therefore, you can use the every
method to check if all the arrays inside the array of arrays have a length
of 0
.
How can I use Vue js to check if all the arrays inside an array of arrays are empty?
To check if all the arrays inside an array of arrays are empty. You can use the computed property allArraysEmpty
to return true
if all the arrays in the arrayOfArrays
are empty, i.e., if their length is 0, and false
otherwise.
The every()
method of the array object can be used to check if every element in the array passes a particular condition, in this case, if the length of each array is 0.
Vue Js check if all the arrays inside an array of arrays are empty Example
<div id="app">
<ul>
<li v-for="(array, index) in arrayOfArrays" :key="index">
{{ array }}
</li>
</ul>
<p v-if="allArraysEmpty" style="color:red">All arrays are empty!</p>
<p v-else>There are non-empty arrays.</p>
</div>
<script type="module">
const app = new Vue({
el: "#app",
data() {
return {
arrayOfArrays: [[], [], []],
};
},
computed: {
allArraysEmpty() {
return this.arrayOfArrays.every(arr => arr.length === 0);
},
}
});
</script>