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Learn about array functions, how to join two arrays, the JavaScript last element in an array, and length of array in JavaScript. Arrays in JavaScript are container-like values that can hold other …

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JavaScript variables are named values and can store any type of JavaScript value. Learn about JavaScript variable types, what a variable is, variable naming, how to declare a variable, and …

JavaScript expressions follow an order of operations, so even though + is written first in the following example, the multiplication happens first between the last two numbers and *.

Fractions don’t exist in JavaScript, but you can rewrite them as division problems using the division operator. Note that the resulting number is always converted to decimals — just like …