Syntax = y DescriptionNecessityxVariableRequired=Assignment operatorRequiredyValue to assign to variableRequired Examples let initialVar = 5 // Variable initialization requires the use of an assignment operator While there are quite a few variations on the assignment operators, they all build off of the basic assignment operator.
Var p = new Person() Assignment Operators Assignment Operator ExampleĪssignment operators, as the name suggests, assign (or re-assign) values to a variable. `this` now refers to the Person object, brilliant! we assign `this` to `self` so we can use it laterĪn arrow function doesn’t define its own this value, it inherits this from the enclosing function: // ES6 syntax To use this inside a traditional function expression, we have to write a workaround like so: // ES5 syntax A simplified thisīefore arrow functions, new functions defined their own this value. You no longer need the function and return keywords, or even the curly brackets. We can convert it to an array, but more on that later…įunction storeNames() Then, when we execute that function with n arguments, 3 in this case, it will return the object to us and it will look like an array.First, we declare a function and make it return the arguments object.If you were to pass 3 arguments to a function, say storeNames(), those 3 arguments would be stored inside an object called arguments and it would look like this when we pass the arguments storeNames("Mulder", "Scully", "Alex Krycek") to our function: The arguments object is an array-like object (in that the structure of the object is similar to that of an array however it should not be considered an array as it has all the functionality of an object) that stores all of the arguments that you passed to a function and is proprietary to that function in particular. Here are some examples of key syntax patterns in JavaScript.
JavaScript is the most widely used scripting language on earth.
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