<!-- A unique key value, it is not recommended to use index, because it will consume a lot of performance. Generally, ID -->
<div v-for="(item, index) of list" key = "id">
{{item.text}} -----> {{index}}
</div>
How to make the array change?
Method 1: Modify through the vue mutation method
Method 2: Change the reference of list
Template placeholders can be used to wrap and not render to the page when rendering. This is the role of template placeholders.
object loop
<div v-for="(item, key, index) of userInfo">{{item}}-->{{key}}-->{{index}}</div>
item is the value, key is the key, and index is the subscript.
How to modify it?
vm.userInfo.name = "Dell Lee";
How to add it? Modify citations.
vm.userInfo=
{
name:
'Dell',
age:
28,
gender:
'male',
salary:
'secret', aaa: 'bbb' this item is added
}
But is this modification method too cumbersome?
Look at the set method of the object:
Please see the set method of the array:
