How can I set custom default values for props in Vue.js?

How can I set custom default values for props in Vue.js?

In Vue.js, you can set custom default values for props by using the default property in the props option. For example:

props: {
  myProp: {
    type: String,
    default: 'Default Value'
  }
}

This way, if myProp is not provided, it will default to 'Default Value'.

Can I use a function to set the default value?

Yes, you can use a function to set a dynamic default value. For example:

props: {
  myProp: {
    type: Number,
    default: () => Math.random()
  }
}

This will set myProp to a random number if not provided.

What if I want to set different defaults based on a condition?

You can achieve that by using a function for the default value and checking the condition inside it. For example:

props: {
  myProp: {
    type: String,
    default: function() {
      return this.someCondition ? 'Value A' : 'Value B';
    }
  }
}

This way, the default value will depend on the condition.

Are there any best practices for using prop defaults?

Yes, some best practices include:

• Always define the type of the prop.
• Use default values to ensure your component behaves predictably.
• Avoid complex logic in default functions to keep your code clean.