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... else...Program codeCopy codeThe Code is as follows: Now, the code can work on multiple platforms.However, with the improvement of the level, you cannot determine each time. If you want to encapsulate this judgment, you can directly call it in the future:Program codeCopy codeThe Code is as follows: So far, the work as a programmer is complete.In the middle, we use the most traditional and basic writing method to separate Js and HTML, and then register multiple events for the same element, we
// Objective: to monitor the application status using anonymous delegation and dynamic event registration
// Restrictions: control events are registered through commandhelper
// Event registration help class
Public class commandhelper{Public static void extends mhandler (Object sender, eventargs E){// Capture the statu
platform compatibility problem of this code, I flipped through the manual and learned the difference between firefox and ie:Register events in firefox using the addEventListener method. To be compatible with ie, we must use if... else... [Ctrl + A select all Note: If you need to introduce external Js, You need to refresh it to execute]Now, the code can work on multiple platforms.However, with the improvement of the level, you cannot determine each time. If you want to encapsulate this judgment
Recently encountered a COCOS2DX bone animation registration event playback sound effects, when the bone animation playback, press the home button to return to the desktop, when the game is opened again, will be black screen.The solution is as follows, probably not too perfect, at least to solve most of the problems.1. Add the native method to the Cocos2dxrenderer.java under Org.cocos2dx.lib Public Static na
if... else...Program codeCopy codeThe Code is as follows:
Now, the code can work on multiple platforms.However, with the improvement of the level, you cannot determine each time. If you want to encapsulate this judgment, you can directly call it in the future:Program codeCopy codeThe Code is as follows:
So far, the work as a programmer is complete.In the middle, we use the most traditional and basic writing method to separate Js and HTML, and then register multiple events for the same element
1. The most direct mode, directly passing a function object into the method function, such as the following click (), the advantages of the disadvantage of a glance to know$ ("#btnComfirmChooseCompany"). Click (function () { varCompanyName = ""; varCompanyID = ""; varhaschecked =false; varAllcheckbox = $ ("input[name= ' CompanyID ')"); for(vari = 0; i ) { if(allcheckbox[i].checked = =true) {haschecked=true; CompanyID= $ (Allcheckbox[i]). attr ("value")); CompanyName= $("#"+CompanyID).
This article mainly analyzes the event registration problems caused by js closures. For more information, see
Background:I read several articles about js scope chains and closures in my spare time, and occasionally saw a problem that I encountered before, that is, registering event-driven for dom nodes in the for loop, for details, see the following code:
Js
First, in the Mainactivity.java class, define the control properties:Then write in the OnCreate () method(a) Gets the value of the control(ii) Defining anonymous class objects(iii) Passing an anonymous class object as a parameter into the event methodButThis call can be defined in the OnClick () method in the anonymous class, but it needs to be writtenThe reason is that you cannot access the Findviewbyid () method inside the mainactivity in an anonymo
Event background:Dickens, more than 100 years ago, said: "This is the best of times, this is the worst of times;"-it seems to be an apt note to the Chinese retail industry today."Danger": the market competition is increasingly fierce, e-commerce impact on the traditional physical stores more and more, coupled with high costs, profits continue to lower;"Machine": consumer demand is growing.The outlet of the retail industry is not only the successful in
In Mainactivity.java, add the following code in the OnCreate () method:It is important to remember that the definition of a variable is defined outside the anonymous class, which is placed in the OnCreate () method, because the anonymous class is equivalent to a property in another class that cannot access the mainactivity inside. If you define a control variable in the OnCreate () method, you must add the final keyword (this method is deprecated)Or you can define a control variable directly in
Development steps:
Override a method in the parent class onoptionsitemselected implement options in Actionbar click events
1 //Register_activity.java2 3 Public classRegister_activityextendsappcompatactivity {4 ......5 @Override6 Public Booleanonoptionsitemselected (MenuItem item) {7 //judging the system back to the item8 Switch(Item.getitemid ()) {9 CaseR.id.ab_return:Ten OneIntent Intent =NewIntent (); AIntent.setclass (register_activity. Th
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