overriding

问题 I am trying to add my own error handling to the JavaScript setTimeout function. The following code works fine in chrome: var oldSetTimeout = window.setTimeout; window.setTimeout = function setTimeout(func, delay) { var args = Array.prototype.slice.call(arguments, 0); args[0] = function timeoutFunction() { var timeoutArgs = Array.prototype.slice.call(arguments, 0); try { func.apply(this,timeoutArgs); } catch (exception) { //Do Error Handling } } return oldSetTimeout.apply(this, args); } But in

问题 Is it possible to override core jQuery functions on Element level, so for an example, i want to override val() function only on one <select> element. if i do something like this var element = $('select'); var old_val = element.val; element.val = function () { console.log('The new val'); return old_val.apply(this, arguments); } element.val(19); it works as expected, but as soon as i address the same field with new jQuery instance var element = $('select'); element.val(19); it stops working

问题 Is it possible to override core jQuery functions on Element level, so for an example, i want to override val() function only on one <select> element. if i do something like this var element = $('select'); var old_val = element.val; element.val = function () { console.log('The new val'); return old_val.apply(this, arguments); } element.val(19); it works as expected, but as soon as i address the same field with new jQuery instance var element = $('select'); element.val(19); it stops working

问题 I am occurring error like: "The method onClick(View) of type oddg must override a superclass method". I am confused where exactly error has occurred. Can you please guide me, what exactly error is? public class oddg extends Activity implements OnClickListener { ProgressDialog dialog; int increment; int maximum ; private static final String TAG = "ServicesDemo"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main1);

问题 I have a base class with a property which has a setter method. Is there a way to invoke the setter in the base class from a derived class and add some more functionality to it just like we do with overriden methods using the base keyword. Sorry I should have added an example. Here is an example. Hope I get it right: public class A { public abstract void AProperty { set { // doing something here } } } public class B : A { public override void AProperty { set { // how to invoke the base class

问题 I have a base class with a property which has a setter method. Is there a way to invoke the setter in the base class from a derived class and add some more functionality to it just like we do with overriden methods using the base keyword. Sorry I should have added an example. Here is an example. Hope I get it right: public class A { public abstract void AProperty { set { // doing something here } } } public class B : A { public override void AProperty { set { // how to invoke the base class

问题 Is there a better way then using VQMOD / OCMOD to change OpenCart's core files? Is there some "overrides" folder exists so that I can simply create any PHP file corresponding to the file structure and simply override a core file? (Like it is possible in PrestaShop and Magento ). VQMOD / OCMOD is highly inconvenient. Does someone use any hacks & tricks to achieve the result? I don't want to touch any core files to keep the system clean and manageable. Thanks a lot! 回答1: If you want to call

问题 In my en.yml translation file, I have: activerecord: errors: template: header: one: "1 error prohibited this {{model}} from being saved" other: "{{count}} errors prohibited this {{model}} from being saved" When an activerecord/validation error occurs during logging into my application, the error message: "1 error prohibited this user session from being saved" is displayed (where user_session is the model being used). I'd rather have it say something like "An error has occured to prevent you

问题 appendChild = function(message) { console.log("intercepted!"); } using the code above does not seem to work. Anyone knows? 回答1: What you might want to replace is Element.prototype.appendChild but it's probably a bad idea. This example adds the text intercepted in the inserted element : var f = Element.prototype.appendChild; Element.prototype.appendChild = function(){f.apply(this, arguments);arguments[0].innerHTML="!Intercepted!"; }; document.body.appendChild(document.createElement("div"));

问题 In .NET, one can specify a "mustoverride" attribute to a method in a particular superclass to ensure that subclasses override that particular method. I was wondering whether anybody has a custom java annotation that could achieve the same effect. Essentially what i want is to push for subclasses to override a method in a superclass that itself has some logic that must be run-through. I dont want to use abstract methods or interfaces, because i want some common functionality to be run in the