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JavaScript JavaScript Foundations Arrays Creating Arrays

John Grillo
John Grillo
30,241 Points
Posted by John Grillo
John Grillo
30,241 Points

Why is new Array() capitalized? is 'new array()' ok? The later won't pass the quiz

I just took the javascript quiz on arrays and discoved that var guides

won't pass if it's set to the lower one but ill pass if it is the first one. Is there any reason for this?

var guides = new Array(42); var guides = new array(42);

2 Answers

Kidist Admasu
Kidist Admasu
11,020 Points

new Array (42) is JavaScript's built-in array constructor and Creates an array with 42 undefined elements.

Jeff Jacobson-Swartfager
Jeff Jacobson-Swartfager
15,419 Points
Jeff Jacobson-Swartfager
Jeff Jacobson-Swartfager
15,419 Points

JavaScript is case sensitive (to JavaScript, JohnGrillo is different from johnGrillo). Similarly, the Array() is different from the array() function. Array() is a global object. You can find out more about it on MDN.