javascript addeventlistener error

Javascript usage of attachevent and addeventlistener The attachevent method attaches other processing events to an event. (Mozilla series not supported) The addeventlistener method is used in the Mozilla series for example: Java code document. getelementbyid ("BTN "). onclick = Method1; document. getelementbyid ("BTN "). onclick = method2; document. getelementbyi

. attachEvent (event, function );Btn1Obj. attachEvent ("onclick", method1 );Btn1Obj. attachEvent ("onclick", method2 );Btn1Obj. attachEvent ("onclick", method3 ); The execution sequence is method3-> method2-> method1 ========================================================== ==================== Mozilla: How to Use addEventListener Target. addEventListener (type, listener, useCapture ); Target: docume

In Mozilla:How to use AddEventListener: Target.addeventlistener (type, listener, usecapture); Target: Documentation node, document, window, or XMLHttpRequest. Type: String, event name, excluding "on", such as "click", "MouseOver", "KeyDown", and so on. Listener: Implements a EventListener interface or a function in JavaScript. Usecapture: Use capture, generally false. For example: document.getElementById

in Mozilla:How to use AddEventListener:Target.addeventlistener (type, listener, usecapture);Target: Documentation node, document, window, or XMLHttpRequest.Type: String, event name, without "on", such as "click", "MouseOver", "KeyDown" and so on.Listener: Implements a EventListener interface or a function in JavaScript.Usecapture: Whether to use snapping, generally with false. For example: document.getElementById ("Testtext"). AddEventListener ("KeyDo

Original address: http://www.jb51.net/article/18220.htm We all know that the use of events is when an event (condition) is triggered and then executes a function, especially JavaScript, in the context of the popular Ajax catalysis , it's more important to understand the use of JavaScript's event usage, and here's an introduction to Avascript's event usage.in Mozilla:How to use AddEventListener:Target.addeventlistener (type, listener, usecapture);Targe

in IE:in an event handler bound by El.onclick, the event object exists as a property of the Window object. el.onclick=function () {var event=window.event;alert (event.type);//"click"}If you add an event handler through Attachevent (), the event object is passed in as a parameter to the handler,el.attachevent ("onclick", function (event) {alert (event.type);//"click"});event handlers are saved in the variable event when specified by an HTML tag property. This is the same as non-ie. In summary ,

Event MonitoringThe interception of events in JavaScript is the method used to react to certain operations. For example, listen for a button pressdown, or get the left mouse button press the mouse position. These all need to be done using listening. The function of listening is simple: addEventListener .Here's an explanation of the nesting relationship for a Web page: Outermost: Window contains: Document co

Original demand: Prevent the button to trigger a click event in a short time, due to repeated submissions caused by the business exception.Figure:DemoDOCTYPE HTML>HTMLLang= "en"dir= "ltr"> Head> MetaCharSet= "Utf-8"> styleMedia= "Screen">. Forbidden Button{cursor:not-allowed; } style> Head> Body> h5>Multiple clicks in 3 seconds only take effect once (based on event interception)h5> Divclass= "Button-group"> Buttonclass= "Link-button"onclick= "Randomnum ()">RandomButto

top Mouseout Mouse away MouseMove Mouse movement Third, Compatibility:If the browser does not support the AddEventListener () method, you can use the Attachevent () method instead.The following examples demonstrate a cross-browser workaround:var x = document.getElementById ("mybtn"); if (X.addeventlistener) { // all major browsers except IE 8 and earlier IE version x.addeventlis

In Mozilla:How to use AddEventListener:Target.addeventlistener (type, listener, usecapture);Target: Documentation node, document, window, or XMLHttpRequest.Type: String, event name, without "on", such as "click", "MouseOver", "KeyDown" and so on.Listener: Implements a EventListener interface or a function in JavaScript.Usecapture: Whether to use snapping, generally with false. For example: document.getElementById ("Testtext"). AddEventListener ("KeyDo

not supported, fortunately they all support the standard AddEventListener method? 123 btn1Obj.addEventListener("click",method1,false);btn1Obj.addEventListener("click",method2,false);btn1Obj.addEventListener("click",method3,false); Execution order is method1->method2->method3? 1234567891011121314151617181920212223242526272829303132333435 "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtm

In Mozilla:How to use AddEventListener:Target.addeventlistener (type, listener, usecapture);Target: Documentation node, document, window, or XMLHttpRequest.Type: String, event name, without "on", such as "click", "MouseOver", "KeyDown" and so on.Listener: Implements a EventListener interface or a function in JavaScript.Usecapture: Whether to use snapping, generally with false. For example: document.getElementById ("Testtext"). AddEventListener ("KeyDo

Dom Methods AddEventListener () and RemoveEventListener () are functions that are used to assign and delete events. Both of these methods require three parameters, respectively:The event name (String), the event handler function (function) to fire, the period or phase (Boolean) that specifies the event handler.　　Dom Event flow (cut from JavaScript advanced programming, lazy painting):The image shows that th

The example in this article tells you that JavaScript uses AddEventListener to add event listener usage. Share to everyone for your reference. The implementation methods are as follows: ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21-22 I hope this article will help you with your JavaScript programming.

The example in this article tells you that JavaScript uses AddEventListener to add event listener usage. Share to everyone for your reference. The implementation methods are as follows: I hope this article will help you with your JavaScript programming.

Let's talk about two things: 1. usage of this pointer; 2. Differences between attachEvent of ie and addEventListener of firefox in event processing. First thing. This refers to a special clock in JavaScript, which points to the current object that calls this statement when the code is running. If it is an event binding function, it points to the bound element itself.

1, AddEventListenerThis method is used to add an event handle to the specified elementBrowser support is chrome1.0, ie9+, fireFox1.0, opera7.0The method contains three parameters event, function, UsecaptureEvent is specified, no "on" prefix is requiredFunctions executed when the function is triggered by an eventUSECAPTURE Specifies whether the event is executed in the capture or bubbling phase, true indicates that the event is executed during the capture phase, false means execution during the b

The pen is studying quickguide.txtArticleAt the same time, according to the step-by-step method, when the result is run, it is found that such an error always occurs, "webform1" does not have a javascript error defined, changed to the project as the root directory, the error is stillUsing Google to search on the Intern

One, JavaScript error handlingError Handling Overview-error, which refers to an unhealthy state in the program, which is called "Exception" or "error" in other programming languages. The interpreter creates and throws an error object for each

Syntax errors, also known as parsing errors, occur in the compilation of traditional languages, occur in the interpretation of JavaScript, and runtime errors are also known as exceptions (exception, after the interpreter during compilation) I. Error Classification 1. syntax error: it is also called a parsing error. I