我正在使用带有对象文字表示法的名称间距。我想使用原型对象继承,所以它Scene
是Snippet
.
我无法Scene
正确启动对象。
console.log(scen1 instanceof xxx.prototypes.Scene); // false
基本上Scene
object 应该具有Scene
+ fromSnippet
的所有属性和方法,结果应该是:
console.log(scen1 instanceof xxx.prototypes.Scene); // true
知道我在这里做错了什么吗?
;
(function(xxx, window) {
xxx.prototypes = {
Snippet: function(snippetId) {
var parent = this;
this.id = snippetId;
this.data;
this.isVisible = 'test';
this.isFocused = false;
this.focus = function() {};
this.render = function() {};
},
Scene: function(scenaId) {
xxx.prototypes.Snippet.call(this);
xxx.prototypes.Scene.prototype = Object.create(xxx.prototypes.Snippet.prototype);
xxx.prototypes.Scene.prototype.constructor = xxx.prototypes.Snippet;
xxx.prototypes.Scene.prototype.isScene = true;
xxx.prototypes.Scene.prototype.isActive;
}
};
}(window.xxx= window.xxx|| {}, window));
//-----------------------------------------------------
function start() {
var snip1 = new xxx.prototypes.Snippet('snip1');
snip1.data = 'snippet-data-1';
snip1.focus();
var scen1 = new xxx.prototypes.Scene('scen1');
scen1.data = 'scene-data-1';
scen1.focus();
console.log(snip1 instanceof xxx.prototypes.Snippet); // TRUE
console.log(scen1 instanceof xxx.prototypes.Scene); // FALSE PROBLEM HERE
}
回答
(function(xxx, window) {
xxx.prototypes = {
Snippet: function(snippetId) {
var parent = this;
this.id = snippetId;
this.data;
this.isVisible = 'test';
this.isFocused = false;
this.focus = function() {};
this.render = function() {};
},
Scene: function(scenaId) {
xxx.prototypes.Snippet.call(this, scenaId);
this.isScene = true;
xxx.prototypes.Scene.prototype.isActive;
}
};
}(window.xxx= window.xxx|| {}, window));
//-----------------------------------------------------
function start() {
var snip1 = new xxx.prototypes.Snippet('snip1');
snip1.data = 'snippet-data-1';
snip1.focus();
var scen1 = new xxx.prototypes.Scene('scen1');
scen1.data = 'scene-data-1';
scen1.focus();
console.log(snip1 instanceof xxx.prototypes.Snippet); // TRUE
console.log(scen1 instanceof xxx.prototypes.Scene); // TRUE
console.log(scen1);
}
start();