How to iterate through a Vue data object using forEach loop

Question

I am currently working with a variable in my data:

 data: function () {
    return {
      myVariable: false,
    }
  }

I'm trying to figure out how to access this variable within a looping function, like the example below:

  anArray.forEach(function(item) {
      this.myVariable = true; 
      // do something
  });

I keep encountering the error 'this' is undefined because it's referencing the current loop function, not the Vue.js object.

Answer 1

Answer №1

Utilize Arrow function to avoid creating a new scope within the forEach loop and maintain the reference to your Vue component's this.

 anArray.forEach((item) => {
  this.myVariable = true; 
  // perform an action
});

Answer 2

Utilize Arrow function to avoid creating a new scope within the forEach loop and maintain the reference to your Vue component's this.

 anArray.forEach((item) => {
  this.myVariable = true; 
  // perform an action
});

Answer 3

To establish the scope of the function, you have the option to bind `this`:

anArray.forEach(function(item) {
  this.myVariable = true; 
  // perform a task
}.bind(this));

Alternatively, you may consider using the arrow notation (Please note, this method is not verified):

anArray.forEach((item) => {
  this.myVariable = true; 
  // perform a task
});

Answer 4

To establish the scope of the function, you have the option to bind `this`:

anArray.forEach(function(item) {
  this.myVariable = true; 
  // perform a task
}.bind(this));

Alternatively, you may consider using the arrow notation (Please note, this method is not verified):

anArray.forEach((item) => {
  this.myVariable = true; 
  // perform a task
});