How do I warn a user of unsaved changes before leaving a page in Vue

user_4742075 0
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I have an UnsavedChangesModal as a component that needs to be launched when the user tries to leave the page when he has unsaved changes in the input fields (I have three input fields in the page).

components: {
    UnsavedChangesModal
},
mounted() {
    window.onbeforeunload = '';
},
methods: {
   alertChanges() {

   }
}
vuex vue.js javascript
3 Answers

These answers only cover navigation within Vue. If the user refreshes the page or navigates to a different site, that will not be caught. So you also need something like:

window.onbeforeunload = () => (this.unsavedChanges ? true : null);
user_8154170
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