javascript getelementsbyclassname

For example Copy Code code as follows: settimeout (function () {alert (' Hello! ');}, 0; SetInterval (callbackfunction, 100); It is assumed that the greeting method in settimeout is executed immediately, because it is not a figment of the imagination, but rather a JavaScript API document that explicitly defines how many milliseconds the second parameter meaning is, and the callback method is executed. This is set to 0 millise

This article is from the Internet. Javascript timer that is easy to fool others' feelings The setTimeout and setinterval of JavaScript are two methods that can easily fool others' feelings, because we often think that the call will be executed in the established way. I think many people share the same feeling, for example SetTimeout (function () {alert ('Hello! ');}, 0 );Setinterval (callbackfun

previous sibling element; previoussibling's element version.L Nextelementsibling: points to the latter sibling element; nextsibling's element version.Browsers that support the element traversal specification include IE +, Firefox 3.5+, Safari 4+, Chrome, and opera.3, HTML5(1) Class-related extensionsHTML5 has added a number of APIs that are dedicated to simplifying the use of CSS classes. The Getelementsbyclassname () method is the most popular metho

　　First, the layout 　　　Second, JavaScript implementation　　Third, JavaScript function encapsulation var srcarr= ["Imgplay/dd_scroll_1.jpg", "imgplay/dd_scroll_2.jpg", "imgplay/dd_scroll_3.jpg", "ImgPlay/dd_scrol L_4.jpg "," imgplay/dd_scroll_5.jpg "," imgplay/dd_scroll_6.jpg "]; var img = document.getelementsbyclassname ("container") [0].getelementsbytagname ("img") [0]; var Arrli = document.gete

the project manager again pushed off the effect, A different effect. Although the project manager did not want this effect, but at that time left a section in my heart, to this day can not forget this terrier. Well, that's why I wanted to write this blog today, hope to achieve this kind of drag-and-drop effect, but do not know how to achieve the students, to provide a way of thinking, not to leave the youth regret, of course, there are many ways to achieve drag-and-drop, here is only a way to

JavaScript loading may cause blocking. However, there will still be exceptions in everything. If you place the in-row script after the style sheet, it will obviously delay the download of resources (the result is that the style sheet is downloaded completely and the in-row script is executed completely, subsequent resources can be downloaded ). This is because in-row Scripts may contain code that depends on the style in the style sheet, such as docum

JavaScript's settimeout and setinterval are two very easy ways to deceive others, because we start to think that the call will be executed in a given way, and I think a lot of people have the same feeling. For example, copy code code as follows:SetTimeout (function () {alert (' Hello! ');}, 0);SetInterval (callbackfunction, 100);It is thought that the greeting method in settimeout will be executed immediately, because it is not a thin air, but rather the Jav