How to use nested for loop in vue.js?
How to use nested for loop in vue.js?
1 answer
by
lindsey.homenick ,
6 months ago
@hal.littel
To use nested for loop in Vue.js, you can follow these steps:
- Create a Vue instance in your JavaScript code:
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new Vue({
el: '#app',
data: {
items: [
{ id: 1, name: 'Item 1' },
{ id: 2, name: 'Item 2' },
{ id: 3, name: 'Item 3' }
]
}
});
|
- In your HTML code, use the v-for directive to loop through the outer array:
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<div id="app">
<div v-for="item in items" :key="item.id">
{{ item.name }}
<div v-for="nestedItem in item.nestedItems" :key="nestedItem.id">
{{ nestedItem.name }}
</div>
</div>
</div>
|
- In your Vue instance, make sure to add the nestedItems property to each item in the outer array:
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new Vue({
el: '#app',
data: {
items: [
{ id: 1, name: 'Item 1', nestedItems: [
{ id: 1, name: 'Nested Item 1' },
{ id: 2, name: 'Nested Item 2' }
] },
{ id: 2, name: 'Item 2', nestedItems: [
{ id: 3, name: 'Nested Item 3' },
{ id: 4, name: 'Nested Item 4' }
] },
{ id: 3, name: 'Item 3', nestedItems: [
{ id: 5, name: 'Nested Item 5' },
{ id: 6, name: 'Nested Item 6' }
] }
]
}
});
|
In the above example, we have a nested array nestedItems inside each item of the items array. The outer loop (v-for="item in items") iterates over each item, and within that, the inner loop (v-for="nestedItem in item.nestedItems") iterates over each nested item. Each item and nested item can be accessed using the double curly braces {{ item.name }} and {{ nestedItem.name }}.