Basic HTML version of Foils prepared 20 April 98

Foil 88 The prototype Property

From Overview of Advanced JavaScript -- Web Scripting Language CPS616 Technologies of the Information Age -- Spring Semester 98. by Tom Scavo,Geoffrey C. Fox
The prototype Property
Add methods to built-in objects: // Does an array contain element x ? function contains( x ) { for (var i=0; i<this.length; i++) { if (this[i] == x) return true; } return false; }
Add the method to the Array object with the prototype property: Array.prototype.contains = contains;

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