Determines whether the array contains the specified variable or element

This article provides two to determine whether the array contains a specified variable or element Oh, the main is to determine whether the array includes the specified characters or variables Oh. This is a JavaScript tutorial, OH.

Method One

Array.prototype.contains = function (Element) {
for (var i = 0; i < this.length; i++) {
if (this[i] = = Element) {
return true;
}
}
return false;
}

Method Two

Array.prototype.contains = function (obj) {
var i = this.length;
while (I-compact) {
if (this[i] = = obj) {
return true;
}
}
return false;
}