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Chapter 3

Target

In this third chapter we will learn how to handle browser DOM events with Vue.

Handling events like click, form submit or drag events is an indispensable part of every modern application. Vue.js makes handling events a piece of cake.

Challenges

What I will do:

  1. Create a members dropdown
    • Add a div with a class of .members that is a sibling to the image element.
    • Test in Browser - should see empty data placeholders
  2. Visualise each member inside the members dropdown
    • Add a .member div as a child of .members.
    • Loop the house.members by using a v-for directive on the .member div
    • Don't forget to add a :key attribute that is bound to a member.id
    • Using {{moustache}} syntax, display the member.name property.
    • Test in Browser

What you will do:

  1. Add currentHouse: null in the data property on the Vue instance.
  2. Toggle the visibility of the .members div.
    • Add a v-if or a v-show directive, setting its expression to houseId === currentHouse.
    • Test in Browser. All dropdowns should be hidden. Why?
  3. Show the .members dropdown when clicking on a house.
    • Add a @click event listener on the .house element.
    • Set its expression to currentHouse = houseId.
    • Test in Browser by clicking on а house.
  4. Close the .members dropdown when clicking away
    • Add a @click event listener to the .map element.
    • Set its @click expression to currentHouse = null.
    • Test in the Browser by clicking on a house. The dropdown should be bugged and not open. Why? If you know share with others.
  5. Fix the broken .members dropdown.
    • Add a .stop modifier to the @click handler on .house element. This will stop it's click event from propagating up to the parents.
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