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Learning call, apply, and bind in JavaScript: A Beginner's Guide 🚀

  • Understanding the this keyword is important in JavaScript as its value is dependent on how a function is called.
  • Call, Apply, and Bind methods allow us to specify the context when invoking a function.
  • Call method is immediately executable letting you define arguments individually.
  • Apply method is like call method but arguments are defined inside an array.
  • Bind method returns a new function with a fixed value for this.
  • Call is used to invoke a function with a particular value of this.
  • Apply is used to invoke a function with a specific value of this and arguments inside an array.
  • Bind returns a new function in which this is fixed for later use.
  • Call, Apply, and Bind continue to be indispensable, especially in instances such as dynamic context binding and creating reusable functions.
  • Use call when invoking a function with a particular this, and apply in cases where you want to pass arguments as an array.

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