Why Child class doesn't have echo() method?
Parent = function(){
this.name = 'abc';
}
Parent.prototype.echo = function(){
alert(this.name);
}
Child = function(){
$.extend(this, Parent);
}
var x = new Child();
x.echo();
What should I do to inherit from parent class in Javascript?
You need to set the prototype of Child
to Parent
.
function Parent() {
this.name = 'abc';
}
Parent.prototype.echo = function () {
alert(this.name);
}
function Child() {
}
Child.prototype = new Parent()
var x = new Child();
x.echo();
I'm assuming you use jQuery. The jQuery extend system uses objects, not 'classes', see: http://api.jquery.com/jQuery.extend/
Child.prototype = new Parent()
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