Array Properties & Methods part 1

The length Property



JavaScript arrays have useful built-inproperties and methods.

An array's length property returns the number of it's elements.
var courses = ["HTML", "CSS", "JS"];
document.write(courses.length);
//Outputs 3Try It Yourself

The length property is always one more than the highest array index.
If the array is empty, the length property returns 0.

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