Handle Bootstrap modal hide event in Vue JS - twitter-bootstrap-3

Question

Is there a decent way in Vue (2) to handle a Bootstrap (3) modal hide-event?
I found this as a JQuery way but I can't figure out how to capture this event in Vue:
$('#myModal').on('hidden.bs.modal', function () {
// do something…
})
Adding something like v-on:hide.bs.modal="alert('hide') doesn't seem to work.

Answer 1

Bootstrap uses JQuery to trigger the custom event hidden.bs.modal so it is not easily caught by Vue (which I believe uses native events under the hood).
Since you have to have JQuery on a the page to use Bootstrap's native modal, just use JQuery to catch it. Assuming you add a ref="vuemodal" to your Bootstrap modal you can do something like this.
new Vue({
el:"#app",
data:{
},
methods:{
doSomethingOnHidden(){
//do something
}
},
mounted(){
$(this.$refs.vuemodal).on("hidden.bs.modal", this.doSomethingOnHidden)
}
})
Working example.

Answer 2

Please see https://bootstrap-vue.js.org/docs/components/modal#overview
There you can find event "hide" or "hidden"
So you can bind this event:
<b-modal ref="someModal" #hide="doSometing">

Answer 3

One option is to tie it to a variable:
data: function(){
return {
showModal: false
//starts as false. Set as true when modal opens. Set as false on close, which triggers the watch function.
},
watch: {
showModal: function(){
if(this.showModal == false){
// do something
},
}
HTML
<button id="show-modal" #click="showModal = true">Show Modal</button>
//later if using a component
<modal v-if="showModal" #close="showModal = false">
// or alternatively in the bootstrap structure
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal" #click="showModal = false">Close</button>
</div>

Answer 4

This may be late but another way if you are using a custom modal component (Modal.vue) you have created is to
create a method in mounted to catch the event of closure (doesn't have to be the same name as below)
mounted: function(){
this.triggerHidden();
}
create the method
methods: {
triggerHidden: function(){
var self = this;
if( $('#getModal').length ){
$('#getModal').on('hidden.bs.modal', function(){
//catch the native bootstrap close event and trigger yours
self.#emit('modal-close');
});
}
}
}
now call use your custom event with your custom/reusable modal component
<custom-modal #modal-close="doSomething"></custom-modal>
The method doSomething will be called when the modal closes. You can also use the approach to hijack the other jquery event so its a little more manageable.

Answer 5

Maybe creating a Custom Vue Directive can help:
Vue.directive('bsevent', {
bind: function bsEventCreate(el, binding, vnode) {
let method = binding.value || (() => { });
$(el).on(binding.arg.replaceAll(/_/g, "."), (event) => { method(event); });
},
unbind(el, binding) {
$(el).off(binding.arg.replace(/_/, "."));
},
});
And then just use it on the element you wish (this example is on a bootstrap collapsible, but you could use it to any other bootstrap event):
<div id="myCollapsible" class="collapse" v-bsevent:hidden_bs_collapse="methodToCall">
...
</div>
The only thing to remember is to register the event with underscores instead of dots (show.bs.modal => show_bs_modal).

Answer 6

If working with bootstrap-vue then below code snippet will be helpful:
export default {
mounted() {
this.$root.$on('bv::modal::hide', (bvEvent, modalId) => {
console.log('Modal is about to be shown', bvEvent, modalId)
})
}
}
for other events please refer to the official docs.

Answer 7

Just use native addEventListener (Vue 3, Composition API)
template:
<div ref="modalElement" class="modal">
...
</div>
script:
import { Modal } from "bootstrap"
import { onMounted, ref } from "vue";
const modalElement = ref(null)
let modal = null;
onMounted(() => {
modal = new Modal(modalElement.value)
modalElement.value.addEventListener("hidden.bs.modal", onHidden)
})
function onHidden() {
// do something…
}

Answer 8

We can also use this simple approach like this example
<template>
<div>
<button #click="openModal = true">Open Modal</button>
<div v-if="openModal">
<div class="modal-background"></div>
<div class="modal-content">
<button #click="openModal = false">Close Modal</button>
</div>
</div>
</div>
</template>
<script>
export default {
data() {
return {
openModal: false
}
}
}
</script>