Copy the code as follows: //element: Need to add a new style element, value: new style function addClass(element, value ){ if (!element.className){ element.className
Methods & Functions Difference 1. Function is a more general concept, such as mathematics and programming 2. method is an object-oriented concept, which generally has a relationship in pairs with a class or object 1. The attributes of an object can be
The editor of the foreword has published about geometric shapes and materials before. I believe that after you have read and learned, we can use them to create objects. The most commonly used object is a mesh, which is an object composed of vertices, edge
Recently I saw a good button click effect. When clicking, it produces a ripples effect. It is quite fun. So I simply implemented it (not considering the compatibility of the lower version browser) Let's take a look at the effect first, as shown in the
This article mainly introduces the example of drawing dot dotted lines in HTML5 Canvas. HTML5 does not provide a method of drawing dotted lines. This article is modified based on Stack Overflow method. Friends who need it can refer to HTML5 Canvas. It pro
There are three comment methods in the javascript language. The first is to comment "/**/", which is generally the beginning of a js file, introducing the author, function and other information. Copy the code as follows:/**author:xxx*day:2008-08
To understand this based on the location of this, the situation can be roughly divided into three types: 1. In the function: this is usually an implicit parameter. 2. Outside the function (in the top scope): in the browser this refers to the global object
alert is a common method of window window objects in JavaScript script language. It only prompts a dialog box and has no cancel function; confirm is a method in JavaScript language. A cancel and confirm dialog box pops up, confirm returns true, cancel ret
Recently, the project encountered a problem in judging empty objects. Please review the relevant information and summarize it. Judging an empty object is no longer the same as judging an empty string, because an empty object is also an object, and memory
1. Error: "Can't swap PDO instance while within transaction" By querying the Laravel source code, you can confirm that the exception was thrown in the setPdo method:
For example, there are 10 lis in one ul, and there is a special style on the third li (such as the color is red, and the others are black). I want to set the color of all other lis - not including red lis - to red. At this time, you need to obtain all the
When using the jQuery iCheck plug-in, we encountered a problem, that is, when we use the ordinary js selection all function, it is invalid. $("#checkall").click(function(){if(this.checked){$("input[name='checkn
When displaying data, the fixed header can have better readability. 1. Implementation method: 1. Define 2 tables, one absolute fixed<div><table cellpadding="0" cellspacing="0" id="table1"><tr>
Object Part Object Type Object is an unordered collection that can store objects of any type, and all other objects are inherited from this object. There are two types of Object creation, one is to use the new operator and the other is literal notation. 1
