JavaScript

1. Add an element inside or outside the element Append, prepend: add to child elementBefore, after: Add as a sibling ElementHtml:Copy codeThe Code is as follows: append a news post to mE Javascript:Copy codeThe Code is as follows: Add an element to

JSON is a highlight of JavaScript. It can use elegant and concise code to initialize objects and arrays. It is also a text-based data definition, which is more semantic than symbol separation and more concise than XML. As a result, more and more JS

Source:Copy codeThe Code is as follows: text1 text2 text3 To obtain the text in the span element, we found that $ ("# test1 span") [0] is not a jQuery object, and only $ ("# test1 span") can be used ") [0]). text () is converted to jQuery and

PrefaceIn JavaScript, scopes, contexts, closures, and functions are the essence. For Junior JSer, it is an advanced necessity. For front-end captors, they can write elegant code only by keeping calm and understanding the essence. This article aims

Copy codeThe Code is as follows:Function copyToExcel (tableid ){// Control buttonVar btn = document. getElementById ("copy ");Btn. setAttribute ("disabled", "true ");Btn. setAttribute ("value", "processing ...");Var curTbl = document. getElementById

In this article, we will explore the concepts of Deferred and Promise in JavaScript. They are a very important feature in the JavaScript Toolkit (such as Dojo and MochiKit, it has also made its debut in the popular JavaScript library jQuery (which

Peng Laoshi mentioned the valueOf method in his recent monthly report. He was excited to go over the introduction of the valueOf method in ECMA5, as follows:15.2.4.4 Object. prototype. valueOf ()When the valueOf method is called, the following steps

1. event TargetNow, the variable event in the event handler stores the event object. The event.tar get attribute stores the target element of the event. This attribute is specified in the dom api but is not implemented by all browsers. JQuery makes

After the project is completed, the user suddenly proposes during the test and acceptance, and the query results can be changed to facilitate printing. Hide project errors. However, it was a headache to make a request at this time. Later, I thought

1. HTML5 implements the async attribute of the scriptThis new attribute allows js to be loaded in non-blocking mode in the browser. In addition, the script also has a defer attribute, all browsers have implemented this attribute (except earlier

I believe that nodejs is no longer a strange word for many people who are concerned about javascript development. Related information about nodejs has been overwhelming on the Internet. Because of its high concurrency, it has created its special

Method 1:Copy codeThe Code is as follows:Function checkRe (checkid ){Var id = window. parent. getQry ("ctrid") + "_";Var values = paipaiparent.opener.doc ument. getElementById (id + "txt_dept_name"). value;Var keys = paipaiparent.opener.doc ument.

Copy codeThe Code is as follows:Function GetDayNum (no, type ){If (type = "35 "){Var num7 = document. getElementById ("6"). value;Var value = document. getElementById ("7"). value;Var valueR = num7;If (no = "7") {valueR = value;} // identifies the

Obtain the height and width of the visible area of the browser window. For details about the height of the scroll bar, see.IE, the browser display window size can only be obtained below: the code is as follows: copy the codeCopy codeThe Code is as

Google's friends who often use google will surely remember the beautiful calendar controls of google, so we will also implement a process. Although the functions and effects are not comparable, what is important is the implementation process.The

The choice of checkbox and radio events once confused me.In my understanding of js, I think the change event should be the most reasonable. Unfortunately, the change event in ie is triggered only when the focus leaves after the change.Later, click

I want to familiarize myself with javascript and do not know jquery. As a leading javascript framework, many of its features are excited. What I have to mention is the unique concatenation writing syntax, so how can he achieve it? Let's also

I can't wait to share my latest results with you. In fact, the code is very similar to the previous version.The Prime Minister is the HTML page code:Copy codeThe Code is as follows: jQuery Dock Add the corresponding CSS code:Copy

1. sparse arrayIt is easy to create a sparse array with a specified length:Copy codeThe Code is as follows:> Var a = new Array (3 );>[,]> A. length3> A [0]Undefined When you traverse it, you will find that it does not have elements. JavaScript will

Typographical layout is an important element in web design. Implementing a high-level typographical style can make your web design look even more amazing. When you see some extraordinary typographical styles, you are curious about how the effects of