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This article introduces the relevant knowledge of "what are the vue interview questions?" in the operation of actual cases, many people will encounter such a dilemma, and then let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Why does 1.v-for add the value of key?

2. Why v-if and v-for cannot be used together?

3. What is the implementation principle of v-model?

What is bound to 4.v-model?

The progressive style of 5.vue framework?

Why is data in 6.vue a function?

What is the difference between 7.v-if and v-show?

The first way to answer:

The second way to answer:

V-if is true conditional rendering because it ensures that event listeners and subcomponents within the conditional block are properly destroyed and rebuilt during switching; it is also lazy: if the condition is false at the initial rendering, nothing is done-the conditional block does not begin to render until the condition becomes true for the first time.

V-show is much simpler-- no matter what the initial condition is, the element is always rendered and simply switched based on the "display" attribute of CSS.

Therefore, v-if is suitable for scenarios where conditions are rarely changed at runtime and do not need to switch conditions frequently, while v-show is suitable for scenarios where conditions need to be switched very frequently.

The this in 8.vue points to?

How to get a node in a 9.vue project?

Immediate and deep monitoring of 10.watch

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