Vue Js Break Array list into two array: In 
 Vue.js, you can use the built-in slice method to break an array list into two arrays (lists). To break this array into two arrays, you can use the slice method,The slice method takes two arguments: the starting index and the ending index. The starting index is inclusive, and the ending index is exclusive. In this example, we calculate the starting and ending indices dynamically based on the length of the original array.

How can I break an array list into two separate arrays (lists) using Vue.js?

The  Vue instance has three properties defined in the data object:

• array which is an array of strings
• firstList and secondList, which are initially empty arrays

The mounted lifecycle hook is used to call the breakList() method when the  Vue instance is mounted on the DOM.

The breakList() method calculates the index of the middle element of the array, and uses the slice() method to split the array into two halves, which are assigned to firstList and secondList respectively.

This code can be used as an example of how to use the slice() method in JavaScript to split an array into smaller arrays. It also demonstrates how  Vue.js works by allowing developers to define reactive data properties and methods that can be used to manipulate and display data in the DOM.

Vue Js Break An Array List Into Two Arrays (Lists) Example

<div id="app">
		<h2>Original List</h2>
		<ul>
			<li v-for="arr in array">{{ arr }}</li>
		</ul>
		<h2>First List</h2>
		<ul>
			<li v-for="number in firstList" :key="number">{{ number }}</li>
		</ul>
		<h2>Second List</h2>
		<ul>
			<li v-for="number in secondList" :key="number">{{ number }}</li>
		</ul>
    </div>
	<script type="module">
		const app = Vue.createApp({
			data() {
				return {
					array: ['Vue', 'React', 'Angular', 'Javascript', 'Node', 'Express', 'CSS'],
					firstList: [],
					secondList: [],
				};
			},
			mounted() {
				this.breakList();
			},
			methods: {
				breakList() {
					let halfIndex = Math.floor(this.array.length / 2);
					this.firstList = this.array.slice(0, halfIndex);
					this.secondList = this.array.slice(halfIndex);
				},
			},
        });
		app.mount('#app');
</scrip>

Output of above example

How can you use the splice() method in Vue.js to break a single array list into two separate arrays?

The code you provided defines a  Vue.js application with an initial array list containing several  programming languages and technologies. The computed property defines two new computed properties: arr1 and arr2.

arr1 uses the splice() method to remove the first two elements from the original array and return them as a new array. The splice() method modifies the original array in place and returns the removed elements. Therefore, after calling splice(0, 2) on array, the array property will contain the remaining elements after the first two have been removed.

arr2 simply returns the modified array, which now contains the elements that were not removed by arr1.

Overall, this code demonstrates one way to break a single array into two separate arrays using the splice() method in  Vue.js.

Vue js Break an array list into two arrays (lists) using Splice method

<div id="app">
	<div>Full Array: {{array}}</div><br>
	<div>Array 1: {{ arr1 }}</div><br>
	<div>Array 2: {{ arr2 }}</div><br>
</div>
<script type="module">
		const app = Vue.createApp({
			data() {
				return {
					array: ['Vue', 'React', 'Angular', 'Javascript', 'Node', 'Express', 'CSS'],
                };
			},
			computed: {
				arr1() {
					return this.array.splice(0, 2);
				},
				arr2() {
					return this.array
				},
			},
        });
		app.mount('#app');
</script>

Output of above example