//html
<img v-if="value.exist" v-for="(value, name) in picsList">
//vmdata
data: {
picsList: {
name1:
{
exist: true
},
name2:
{
exist: true
}
}
}
//
Vue.set(vm.picsList["name1"], "exist", false)
//
data: {
picsList: {
name1:
{
exist: false
},
name2:
{
exist: true
}
}
}
//img
//directly modify vm.picsList.name1.exist = false
it is recommended to return a new object and use Object.assign () to return a new picsList []. It seems that vue cannot listen for changes in internal attributes
problem has been found! The reason is that vue cannot monitor the addition or deletion of object attributes. You need to use Vue.delete operation
VFT if = "value.exist" where is the value?
v-for remember to add key
<img v-if="value.exist" :key="name" v-for="(value, name) in picsList">when I encounter a situation similar to yours, you can take a look at this due to JavaScript restrictions, Vue cannot detect the following changing arrays
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