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JavaScript Vue.js Basics What a Beautiful Vue! Basic Event Handling

Hai Huang
Hai Huang
12,675 Points
Posted by Hai Huang
Hai Huang
12,675 Points

Can I pass any arguments to the event handler function when using v-on directive?

I understand what the attribute (or more precisely, the directive) v-on:mouseover="functionToRun" does. I just noticed that the event handler function is not followed by a pair of parentheses.

So,

  1. I wonder if v-on:mouseover="functionToRun()" does the same thing.
  2. I wonder if I can pass any arguments to it using the data in the Vue instance (v-on:mouseover="functionToRun(this.title)", for example).

Thank you.

1 Answer

Steven Parker
Steven Parker
229,771 Points
Steven Parker
Steven Parker
229,771 Points
  1. The handler value can be a function name or some script code, so yes, you can call the function or just name it.
  2. If you're calling functions as part of script code, they can be passed arguments.
Hai Huang
Hai Huang
12,675 Points
Hai Huang
Hai Huang
12,675 Points

Thank you very much, Steven!