onload alert

How to register multiple event handler functions for window. onload How to register multiple event handler functions for window. onload:We all know that multiple Windows cannot be used on the same page. onload registers the event handler function. If multiple functions are used, the last one will overwrite the previous one. However, we can implement this function flexibly. The code example is as follows:

This article mainly introduces how to dynamically create the script tag onload in IE8, which involves adjustments to the javascript loading sequence and has some reference value, for more information about how to dynamically create the script tag onload in IE8. Share it with you for your reference. The specific analysis is as follows: During the project today, I found a strange problem. The dynamically cre

This article mainly introduces how to dynamically create the script tag onload in IE8, which involves adjustments to the javascript loading sequence and has some reference value, for more information about how to dynamically create the script tag onload in ie8. Share it with you for your reference. The specific analysis is as follows: During the project today, I found a strange problem. The dynamically cre

When referencing other js, its js uses the window. onload event. In this case, the onload event of the introduced page may not be executed. How can this problem be solved? When other js is referenced in the following section, its js uses window. onload event. In this case, the onload event of the introduced page may fa

We often use window. onload to process pages. when page loading is complete, we will do something. But this window. onload is the completion of page loading, even including images. next we will discuss in detail the window. onload usage the javascript script code in the webpage can be executed only after the document is loaded. Otherwise, the object cannot be obt

The implementation of the Story mode is to load only the currently viewed photo and the two photos below it, and load and render the comment area only when loading the photo, before an image is loaded, a one-pixel image will be taken into place, and a loading class will be used to display a loading background image to determine whether the image will be replaced with a real image in the visible area, after the image is loaded successfully, the loading class is deleted. The problem lies at the e

The solution to dynamically creating the script tag onload in IE8 is invalid. ie8onload This article describes how to dynamically create the script tag onload in IE8. Share it with you for your reference. The specific analysis is as follows: During the project today, I found a strange problem. The dynamically created script tag cannot trigger the onload event und

Copy codeThe Code is as follows: The solution is simple. Just change the code order: Create an iframe, add it to the body, and add the load event. All browsers are consistent.Copy codeThe Code is as follows:Var ifr = document. createElement ('iframe ');Document. body. insertBefore (ifr, document. body. childNodes [0]);Ifr. src = 'HTTP: // www.baidu.com ';Ifr. onload = function () {alert (1 );}; In addition,

CopyCode The Code is as follows: The solution is simple. Just change the code order: Create an IFRAME, add it to the body, and add the load event. All browsers are consistent.Copy codeThe Code is as follows: var IFR = Document. createelement ('iframe ');Document. Body. insertbefore (IFR, document. Body. childnodes [0]);IFR. src = 'HTTP: // www.baidu.com ';IFR. onload = function () {alert (1 );}; In addi

Recently, when I changed a page embedded in the frame, jquery was used for the effect, and the page itself was bound with the onload event. After the change, the test in Firefox is normal and smooth. in IE, it takes more than a dozen seconds for jquery to show up, and daylily is getting cooler. Recently, when I changed a page embedded in the frame, jquery was used for the effect, and the page itself was bound with the

The onload, onresize, and onscroll events of windows are different from other events. They cannot be added using attachEvent or addEventListener.That is to say, it can only be like this (take onload as an example, the same below ):Copy codeThe Code is as follows:Window. onload = function (){//...}; However, when you want to add a new event handler for

You may have encountered this situation. , In JS OfCodeUsed Window. onload After , May affect Body In Onload Event. You can write all Body And can be put in all Window. onload But this is not very convenient, sometimes we need two at the same time. Use Window. attachevent And Window. addeventlistener To solve the problem.

the method of the specified name without the parameter and add it to the dictionary. The method signature with parameters must be page_load (Object sender, eventargs E) The method signature without parameters must be page_load () That is to say, page_load is case-insensitive and can be written as page_load. If there are parameters and no parameters, only those with parameters will be taken. If no parameter is included, the system retrieves the parameter. If both the names include page_lo

Onload needs to be executed after all resources on the page are loaded, while ready is when the DOM document tree has been parsed, ready is faster than onload. For example, a large image is displayed on a page, which takes a long time to load. onload is executed only after the image is loaded, while ready does not have to wait until the image is loaded. In $ (do

Window. onload and $ (docunment). ready, docunment. ready After the browser loads the DOM, it adds events to the DOM element through javascript. In javascript, the window. onload () method is usually used. In jquery, the $ (document). ready () method is used. The following describes the differences between the two. 1. execution timeWindow. onload: It must be exec

Similarities and differences of Onload,onunload and onbeforeunload methodsComparison of one or two methods1 onload means to execute when the page is loaded.2 same point: Onunload,onbeforeunload are called when a refresh or shutdown occurs3 different points: onbeforeunload is to go to the server to read the new page when the call, not to start reading, and OnUnload has read from the server to load the new pa

As follows:Copy codeThe Code is as follows: Result:IE6/7/8: Pop Up 2IE9/10: 2, 1Firefox/Safari/Chrome/Opera: pop up 1The test results show that IE9 has started to support onload events of scripts. We have been using the above two events to determine whether the js file has been loaded. A long time ago, I knew that the onreadystatechange event was used in IE, and the value of readyState was used in the event handler to determine whether the loading was

Today, in the work of the OnLoad event, found some interesting things, such as generally speaking, if we need to bind a DOM structure to an event, we generally use the following method (for example, Window object):PhenomenonWindow.onload = function () {console.log (' To execute both methods, you can see the following:Note that both methods are triggered, and at this point the IE performance is consistent.Next, let's try the document object.Document.on

Recently, when I changed a page embedded in the frame, jquery was used for the effect, and the page itself was bound with the onload event. After the change, the test in Firefox is normal and smooth. in IE, it takes more than a dozen seconds for jquery to show up, and daylily is getting cooler.At first, we thought it was a conflict with the onload loading method. $ (Document) is widely used on the Internet

Recently, when I changed a page embedded in a frame, I used jquery to do the effect, and the page itself was bound to the OnLoad event. After the change, Firefox test under normal fluency, IE will wait for a few seconds of jquery effect only appear, Day Lily is cold. At first thought it was conflicting with the method that was loaded by itself onload. The common saying on the Internet is $ (document). Read