Vue组件created钩子调用方法触发ReferenceError错误求助

Hey there! I see exactly what's causing that error in your Vue component. Let's break it down and fix it quickly.

The Problem #

Your created hook is set to myMethod() directly—this doesn't work for a couple key reasons:

• When you define the component object, myMethod isn't in scope yet (it's nested inside the methods object, not a top-level variable the code can access immediately).
• Even if it were reachable, calling it like myMethod() runs the code right when the component object is being defined, before the Vue instance is fully created. At that point, the method hasn't been bound to the component instance.
• Most critically, Vue expects lifecycle hooks like created to be functions that run when the lifecycle event triggers, not the result of calling a method upfront.

The Fix #

Update your component code to make created a function, and use this to call your method inside that function. Here's the corrected version:

export default { 
  name: 'MyComponent', 
  methods: { 
    myMethod: function () { 
      console.log("asd123") 
    } 
  }, 
  created() { // Use a function for the hook
    this.myMethod(); // Call the method via `this`
  }
}

Why This Works #

• The created function runs after the Vue instance is initialized (but before the component mounts to the DOM). At this point, all your component's methods are bound to the instance, so this refers directly to the component and can access myMethod without issue.
• By wrapping the method call in a function, you're telling Vue to execute that code when the created lifecycle event fires, not when the component object is first written.

That should eliminate the ReferenceError and make your method run as expected when the component is created!

内容的提问来源于stack exchange，提问作者djur1