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schnogz/basic-constructor-function-mixed.js

Last active August 29, 2015 14:25
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methods within constructor vs prototype in javascript
Raw
basic-constructor-function-mixed.js
function Dog (name, breed) {
// instance variables
this.name = name;
this.breed = breed;
var medicalRecords = {
"hasWorms": true,
"hasDiabetes": false
};
this.checkMedicalRecordsForIssues = function() {
if (medicalRecords.hasWorms || medicalRecords.hasDiabetes) {
return true;
}
return false;
}
}
Dog.prototype.bark = function() {
alert("WOOF!");
};
Dog.prototype.getTrickList = function() {
return [];
};
Dog.prototype.hasMedicalIssues = function() {
return this.checkMedicalRecordsForIssues();
};
Raw
basic-constructor-function-with-prototype.js
function Dog (name, breed) {
// instance variables
this.name = name;
this.breed = breed;
}
Dog.prototype.bark = function() {
alert("WOOF!");
};
Dog.prototype.getTrickList = function() {
return [];
};
Raw
basic-constructor-function.js
// Dog constructor
function Dog (name, breed) {
// instance variables
this.name = name;
this.breed = breed;
// instance functions
this.bark = function() {
alert("WOOF!");
};
this.getTrickList = function() {
return []; // stupid dog
};
}
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