I'm trying to make the constructor function Toolbar inherit properties and methods from the Editor, but is not working good:
+function(window, $) {
function Editor(editor) {
this.editor = editor;
this.toolBar = new Toolbar.call(this);
}
function Toolbar() {
console.log(this.editor);
}
window.onload = function() {
var el = document.querySelectorAll('.editor')[0];
if (el) {
var edtr = new Editor(el);
}
};
}(window, jQuery);
The error is:
Uncaught TypeError: function call() { [native code] } is not a constructorEditor @ _editor.js:7window.onload @ _editor.js:19
Any helps, here?
It seems like you have found the problem, but I just wanted to offer up some code you (and others) can use if you so choose. This is some generic code for prototypal inheritance in javascript:
// this will serve as the base class
function Toolbar (el) {
this.element = el;
}
// define some methods on your base class
Toolbar.prototype.customMethod = function () {
console.log(this instanceof Editor);
}
// create a new class which inherits from the base class
function Editor () {
Toolbar.apply(this, arguments);
}
Editor.prototype = Object.create(Toolbar.prototype);
And you can use it like this:
var edtr = new Editor(el);
edtr.element === el; //-> true
edtr.customMethod(); //-> true
Cross browser way in case you can not use Object.create (old IE versions):
function extend(d, b) {
for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
function __() { this.constructor = d; }
__.prototype = b.prototype;
d.prototype = new __();
}
// this will serve as the base class
function Toolbar (el) {
this.element = el;
}
// define some methods on your base class
Toolbar.prototype.customMethod = function () {
console.log(this instanceof Editor);
}
// create a new class which inherits from the base class
function Editor () {
}
extend(Editor, Toolbar);
new Editor().customMethod();
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