Render function syntax in Vue - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a simple render function that returns a <div> element.

Vue

export default {
  render() {
    return [1]('div', 'Hello World')
  }
}

Drag options to blanks, or click blank then click option'

AcreateElement

Brender

Ch

Ddiv

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'render' instead of the helper function.

Using 'div' as a function instead of a string tag name.

Using 'createElement' without importing or aliasing it.

The h function is the standard alias for the createElement function used in Vue render functions.

2fill in blank

medium

Complete the render function to create a <button> element with text 'Click me'.

Vue

export default {
  render() {
    return h([1], 'Click me')
  }
}

Drag options to blanks, or click blank then click option'

A'div'

B'button'

C'span'

D'input'

Attempts:

3 left

💡 Hint

Common Mistakes

Using a tag name that does not match the desired element.

Forgetting the quotes around the tag name.

The first argument to h is the tag name as a string. Here, it should be 'button' to create a button element.

3fill in blank

hard

Fix the error in the render function by completing the code to create a <p> element with dynamic text.

Vue

export default {
  data() {
    return { message: 'Hello Vue' }
  },
  render() {
    return h('p', [1])
  }
}

Drag options to blanks, or click blank then click option'

Athis.message

Bmessage

C'message'

Dthis.data.message

Attempts:

3 left

💡 Hint

Common Mistakes

Using just 'message' without 'this'.

Using a string 'message' instead of the variable.

Trying to access data with 'this.data.message' which is incorrect.

Inside the render function, you access component data with this.message.

4fill in blank

hard

Fill both blanks to create a <ul> with two <li> children using the render function.

Vue

export default {
  render() {
    return h('ul', null, [
      h([1], 'Item 1'),
      h([2], 'Item 2')
    ])
  }
}

Drag options to blanks, or click blank then click option'

A'li'

B'ul'

C'div'

D'span'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'ul' or 'div' instead of 'li' for list items.

Mixing different tags for the two items.

Each list item is an 'li' element inside the 'ul'.

5fill in blank

hard

Fill all three blanks to create a render function that returns a <button> with a click event and label.

Vue

export default {
  methods: {
    handleClick() {
      alert('Clicked!')
    }
  },
  render() {
    return h('button', { [1]: this.[2] }, [3])
  }
}

Drag options to blanks, or click blank then click option'

AonClick

BhandleClick

C'Click me!'

Donclick

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'onClick' instead of 'onclick' for event name.

Using the wrong method name.

Forgetting quotes around the button label.

In Vue render functions, event listeners use on + event name in lowercase, so onclick. The method is handleClick, and the button label is 'Click me!'.