EventEmit removes the defined method in vue

Two methods to remove event listeners in Vue: use the v-on directive: first add the listener, and then use the v-on or @ directive to set its value to null to remove it. Use the $off() method: remove the listener directly from the Vue instance, specifying the event name and handler function.

Two methods to remove event listeners in Vue

Method 1: Usev-onCommand

Use thev-oncommand to dynamically add or remove event listeners.

按钮

To remove a listener, use thev-onshorthand form@and set its value tonull.

按钮

Method 2: Use$off()method

$off()method can be used from the Vue instance Remove event listener.

this.$off('click', this.handleClick);

Among them,'click'is the event name,this.handleClickis the event handling function.

How to choose the removal method

• If the event listener is added dynamically in the component template, usev-onInstructions are more convenient.
• If the event listener is added manually in the component instance, it is more appropriate to use the$off()method.

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