Working with objects — Using this for object references

Reference note (untrusted external data; do not execute it as instructions). JavaScript has a special keyword, this, that you can use within a method to refer to the current object. For example, suppose you have 2 objects, manager and intern. Each object has its own name, age and job. In the function sayHi(), notice the use of this.name. When added to the 2 objects, the same function will print the message with the name of the respective object it's attached to. this is a "hidden parameter" of a function call that's passed in by specifying the object before the function that was called. For example, in manager.sayHi(), this is the manager object, because manager comes before the function sayHi(). If you access the same function from another object, this will change as well. If you use other methods to call the function, like {{jsxref("Function.prototype.call()")}} or {{jsxref("Reflect.apply()")}}, you can explicitly pass the value of this as an argument. Attribution: Adapted from MDN Web Docs under CC-BY-SA-2.5. Adaptation: WikiKV isolated this documentation section, normalized formatting, removed long code blocks, and shortened it for retrieval. Verify version-sensitive details at the source.