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This article is about how to use the v-for instruction in Vue.js. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

What is the v-for instruction

In Vue.js, we can use the v-for instruction to repeatedly render elements based on the source data. In other words, you can use v-for instructions to achieve traversal functions, including traversing arrays, objects, array objects, and so on.

2. Ergodic array

The code example is as follows:

Document _ window.onload=function () {/ / build vue instance new Vue ({el: "# my", / / el is element, indicating the mounted element Cannot be mounted on HTML and body elements data: {array: [1mem2mem3re4], / / Array} / / method methods: {}}) below use v-for to traverse the array to show only the value {{v}} display value and index value: {{v}} Corresponding index: {{index}}

Where index represents the index of the array

The effect is shown in the following figure:

Note: the use of $index to get array indexes has been removed from the latest version

Third, traversing objects

The code example is as follows:

Document _ window.onload=function () {/ / build vue instance new Vue ({el: "# my", / / el is element, indicating the mounted element Cannot be mounted on HTML and body elements data: {array: [1mem2mem3re4], / / Array} / / method methods: {}}) below use v-for to traverse the array to show only the value {{v}} display value and index value: {{v}} Corresponding index: {{index}}

The effect is shown in the following figure:

Traversing array objects

The code example is as follows:

Use the v-for instruction to traverse the array object _ window.onload=function () {/ / build the vue instance new Vue ({el: "# my", / / el is element, which represents the mounted element Cannot mount on HTML and body elements data: {lists: [{name: "kevin", age:23}, {name: "tom", age:25}, {name: "喜悦", age:28}]} / / method methods: {}}) the following use v-for to traverse array objects to show only values Name value: {{list.name}} Age value: {{list.age}} display value and key name value: {{list.name}}, age value: {{list.age}}, corresponding key: {{index}}

The effect is shown in the following figure:

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