Q71. What are the merging strategies in mixins?
When a mixin and the component itself contain overlapping options, the options will be merged based on some strategies. 1. The data objects undergo a recursive merge, wit...
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Q72. What are custom options merging strategies?
Vue uses the default strategy which overwrites the existing value while custom options are merged. But if you want a custom option merged using custom login then you need...
Q73. What are custom directives?
Custom Directives are tiny commands that you can attach to DOM elements. They are prefixed with v- to let the library know you're using a special bit of markup and to kee...
Q74. How do you register directives locally?
You can also register directives locally(apart from globally) using directives option in component as below, ```javascript directives: { focus: { // directive definition ...
Q75. What are the hook functions provided by directives?
A directive object can provide several hook functions, 1. bind: This occurs once the directive is attached to the element. 2. inserted: This hook occurs once the element ...
Q76. What are the directive Hook Arguments?
All the hooks have `el`, `binding`, and `vnode` as arguments. Along with that, **update** and **componentUpdated** hooks expose `oldVnode`, to differentiate between the o...
Q77. How do you pass multiple values to a directive?
A directive can take any valid javascript expression. So if you want to pass multiple values then you can pass in a JavaScript object literal. Let's pass object literal t...
Q78. What is function shorthand in directive hooks?
In few cases, you may want the same behavior on `bind` and `update` hooks irrespective of other hooks. In this situation you can use function shorthand, ```javascript Vue...
Q79. What is the benefit of render functions over templates?
In VueJS, the templates are very powerful and recommended to build HTML as part of your application. However, some of the special cases like dynamic component creation ba...
Q80. What is a render function?
Render function is a normal function which receives a `createElement` method as it's first argument used to create virtual nodes. Internally Vue.js' templates actually co...