Learn how to rearrange the order of Vue elements

Question

Learn how to rearrange the order of Vue elements

I am working with a specific object structure in my code:

lines: [{ 
  order: '1', 
  text: ' blue' 
},{
  order: '2', 
  text: 'green' 
},{ 
  order: '3',   
  text: 'yellow' 
}]

Currently, this object is displayed on the page as follows:

Blue
Green
Yellow

My goal is to rearrange these elements and update the object without using drag-and-drop functionality. Instead, I would like to implement buttons for moving items up and down. The desired layout should be like this:

Blue - [down]
Green [up, down]
Yellow [up]

Each bullet point represents a component. Can someone guide me on how to achieve this?

javascript vue.js vuejs2 vue-component

Answer 1

Answer №1

Given the limited information provided, I took a shot at it.

For further reference, check out Vuejs list caveats

As per the documentation:

Due to JavaScript constraints, Vue is unable to detect certain changes to an array:
When you set an item directly using the index, for example, vm.items[indexOfItem] = newValue

Therefore, when making changes to an array in Vue, consider using one of the following methods:

// Vue.set
Vue.set(example1.items, indexOfItem, newValue)
// Array.prototype.splice
example1.items.splice(indexOfItem, 1, newValue)

An example view could be structured as follows:

<div id="app">
  <div v-for="(line, index) in lines">
    <p style="display: inline-block">{{line.text}}</p>
    <button @click="up(index)" v-if="index !== 0">UP</button>
    <button @click="down(index)" v-if="index !== lines.length-1">DOWN</button>
  </div>
</div>

Answer 2

Given the limited information provided, I took a shot at it.

For further reference, check out Vuejs list caveats

As per the documentation:

Due to JavaScript constraints, Vue is unable to detect certain changes to an array:
When you set an item directly using the index, for example, vm.items[indexOfItem] = newValue

Therefore, when making changes to an array in Vue, consider using one of the following methods:

// Vue.set
Vue.set(example1.items, indexOfItem, newValue)
// Array.prototype.splice
example1.items.splice(indexOfItem, 1, newValue)

An example view could be structured as follows:

<div id="app">
  <div v-for="(line, index) in lines">
    <p style="display: inline-block">{{line.text}}</p>
    <button @click="up(index)" v-if="index !== 0">UP</button>
    <button @click="down(index)" v-if="index !== lines.length-1">DOWN</button>
  </div>
</div>

Learn how to rearrange the order of Vue elements

Answer №1

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