JavaScript Reference
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Quick Reference

The Object constructor property returns the function that created the Object prototype.

<!-- html element to place output -->
<p id="my_output"></p>
// object
let human = {
    firstName: 'Johnny',
    lastName: 'Shay',
    size: 'small'
};

// constructor
let text = human.constructor;

//output constructor
document.getElementById('my_output').innerHTML = 'Constructor: ' + text;

Output

Constructor: function Object() { [native code] }

Syntax

object.constructor

JavaScript Notes:

  • When using JavaScript, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
  • JavaScript is a case-sensitive language; firstName is NOT the same as firstname
  • Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
  • JavaScript variables must begin with a letter, $, or _
  • JavaScript variables are case sensitive (x is not the same as X)
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