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67 lines
1.6 KiB
67 lines
1.6 KiB
/**
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* @fileoverview This module provides some simple function for inheritance.
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* @author NHN.
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* FE Development Lab <dl_javascript@nhn.com>
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*/
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'use strict';
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/**
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* Create a new object with the specified prototype object and properties.
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* @param {Object} obj This object will be a prototype of the newly-created object.
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* @returns {Object}
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* @memberof tui.util
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*/
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function createObject(obj) {
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function F() {} // eslint-disable-line require-jsdoc
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F.prototype = obj;
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return new F();
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}
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/**
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* Provide a simple inheritance in prototype-oriented.<br>
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* Caution :
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* Don't overwrite the prototype of child constructor.
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*
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* @param {function} subType Child constructor
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* @param {function} superType Parent constructor
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* @memberof tui.util
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* @example
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* //-- #1. Get Module --//
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* var util = require('tui-code-snippet'); // node, commonjs
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* var util = tui.util; // distribution file
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*
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* //-- #2. Use property --//
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* // Parent constructor
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* function Animal(leg) {
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* this.leg = leg;
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* }
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* Animal.prototype.growl = function() {
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* // ...
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* };
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*
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* // Child constructor
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* function Person(name) {
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* this.name = name;
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* }
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*
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* // Inheritance
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* util.inherit(Person, Animal);
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*
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* // After this inheritance, please use only the extending of property.
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* // Do not overwrite prototype.
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* Person.prototype.walk = function(direction) {
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* // ...
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* };
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*/
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function inherit(subType, superType) {
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var prototype = createObject(superType.prototype);
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prototype.constructor = subType;
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subType.prototype = prototype;
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}
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module.exports = {
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createObject: createObject,
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inherit: inherit
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};
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