Vue Js Push Array to Array with Key:In Vue.js, if you want to push an array into another array while preserving a specific key, you can achieve this by utilizing the spread operator and the push method of arrays. The spread operator allows you to expand the elements of an array, while the push method adds elements to the end of an array. By combining these two, you can add the elements of one array into another without losing the key or structure. This approach ensures that the original key and value associations are maintained within the resulting array.
How can I use Vue js to push an array into another array while specifying a key for the new array?
The Vue instance also defines a method called “pushArray”. When this method is called, a new array called “newArray” is created. It contains three objects with “key” and “value” properties. The “pushArray” method then pushes the items from “newArray” into the “mainArray” using the spread operator and the map function.
The spread operator (…) is used to expand the elements of “newArray” into individual arguments to the “push” method of “mainArray”. The map function is used to create new objects with the same “key” and “value” properties as the items in “newArray”.
Vue Js Push Array to Array with Key Example
<div id="app">
<button @click="pushArray">Push Array</button>
<p v-for="(item, index) in mainArray" :key="index">{{ item.key }} - {{ item.value }}</p>
</div>
<script type="module">
const app = new Vue({
el: "#app",
data() {
return {
mainArray: [
{ key: 1, value: 'Item 1' },
{ key: 2, value: 'Item 2' },
{ key: 3, value: 'Item 3' },
],
};
},
methods: {
pushArray() {
const newArray = [
{ key: 4, value: 'Item 4' },
{ key: 5, value: 'Item 5' },
{ key: 6, value: 'Item 6' },
];
this.mainArray.push(...newArray.map(item => ({ key: item.key, value: item.value })));
},
},
});
</script>
Output of Vue Js Push array to array with key
