JavaScript/Reserved words/instanceof

< JavaScript | Reserved words

The `instanceof` keyword

The instanceof keyword returns true, if the left-hand side of the operator corresponds to the class on the right-hand side.

Syntax

  object instanceof class

Examples

  theArray = new Array();
  if (theArray instanceof Array) {
    for (var i = 0; i < theArray.length; i++) {
      […]
    }
  }