In devtools with Vue2
I can access my components methods by selecting a component in vue devtools
and then type $vm0.myMethod()
in the console.
export default {
// ...
methods: {
myMethod() {
console.log('hello');
},
}
// ...
}
Now I'm using Vue3
with options API. How can I still access my component methods?
CodePudding user response:
Given that the methods are specified in methods
for options API: {
<script>
export default {
expose: ['publicMethod'],
methods: {
privateMethod() {...}
publicMethod() {...}
},
}
</script>
For composition API, it's presumed that component methods are returned from setup function:
<script>
export default {
setup(props, ctx) {
function justLocalFunction() {...}
function privateMethod() {...}
function publicMethod() {...}
ctx.expose({ publicMethod })
return { privateMethod, publicMethod };
}
}
</script>
This is implicitly done with script setup
syntax:
<script setup>
export default {
setup(props, ctx) {
{
// Block scope isn't magically transformed
function justLocalFunction() {...}
}
function privateMethod() {...}
function publicMethod() {...}
defineExpose({ publicMethod })
}
}
</script>
Here only publicMethod
is available on component ref. While privateMethod
and publicMethod
are exposed on internal component instance, which can be accessed as getCurrentInstance().proxy.privateMethod
, etc inside setup block, and as devtools $vm.proxy
via Vue devtools.
If there's a chance that justLocalFunction
needs to be accessed later, returning it from setup function will make it easier for testing and debugging.
CodePudding user response:
I assume that devtools you mention is the Vue Devtools, rigth? I hope this video can help you