JavaScript

Java makes the concept of garbage collection not only familiar to environmental protection personnel, but also a required course for programmers. Let's take a look at its definition: Garbage collection is an automatic memory management form. The

The jQuery library contains many methods for changing and operating HTML elements and their attributes. One of the most important parts is that jQuery can be used to operate the DOM. This article describes how to use jQuery to obtain the values or

Because the call () and apply () of js are rarely used, I recently reviewed [JavaScript The Definitive Guide 6th Edition] to understand what The two methods are doing. There are two paragraphs in the book that are clearly written, which can be

Methods for automatically clearing ie cache in js-commonFor dynamic files, such as index. asp? Id =... or index. aspx? I believe experienced programmers know how to prohibit the browser from caching data.But for static files (css, jpg, gif, and so

Today, we need to use a select change event to obtain the months with configuration using ajax (just as there is a record ), the configured month is passed as a string, for example: Returns in the form of 3, 4, 5, 6, and 7. The Code is as follows:  

Js function set · String (String) 1. declare var myString = new String ("Every good boy does fine. "); var myString =" Every good boy does fine. "; 2. string connection var myString = "Every" + "good boy" + "does fine. "; var myString =" Every ";

1. Jquery introduction Jquery is another excellent Javascript framework after prototype. It is a lightweight js library that is compatible with CSS3 and various browsers. JQuery allows you to easily process HTML documents, events, and animation

String operations are very frequent and important in js. I can remember it clearly after reading the book, but I don't need it for a while, so I will forget about it. It is hard to remember a poor memory... Today, we will sort out some common

Preface This article is estimated not to be too long, and there is a risk of removing the home page, but the old man () will not be afraid of dropping. So I'm here! Digress: Transparent Animation not supported This image is very easy to lose

The following is a detailed analysis of the function of the toString method in JAVA. For more information, see Because it is an existing method in the Object, and all classes inherit the Object, "all objects have this method ".It is usually only for

This article provides a detailed analysis of the implementation code for dynamically setting the enctype value of the form in jQuery. For more information, see The code is simple. Pay attention to the following two points:EnctypeAndEncoding Copy

Today, we use jquery ui dialog for a pop-up window effect. Let's take a look at the effect: We can see that when you click, the pop-up window appears, and the pop-up window is centered, you can still drag it... To achieve this, you only need the

When writing comprespt code, the typeof and instanceof operators are used from time to time and are mandatory. But! Using them is always hard to get the desired results directly, and it is very tangled. It is widely said that "these two operators

You can use several methods to determine whether an attribute exists in an object. 1. Use the in keyword This method can be used to determine whether an object's own attributes and inherited attributes exist. The Code is as follows: Var o = {x: 1 };

Var reg =/("([^"] * (.)?) * ") | ('([^'] * (.)?) * ') | (/{2 ,}.*? (R | n) | (/* (n | .)*? */)/G, // Regular Expression str = ('event'{.html (); // The console of the text to be processed. log (str); // print the original console. log (str. match

Recently, I suddenly found that my JavaScript code is bloated, so I began to study the simplified JavaScript method. In this way, we can make our JavaScript code look fresh and improve our technology. So how can I make it empty? The following is a

Copy codeThe Code is as follows:

In javascript, The isNaN () function in javascript is introduced here.Function: The isNaN () function is used to check whether the parameter is a non-numeric value.Syntax: IsNaN (x) x is required. The value to be detected.Return Value: If x is a

Differences:Body is the body subnode In the DOM object, that is, the tag;DocumentElement is the root node root of the entire node tree, that is, the label;In BackCompat mode, if no DTD is used:Copy codeThe Code is as follows:Document.doc

Although JavaScript is naturally just a casual look, as more and more things can be done by browsers, this language is also increasingly exposed. In complex logic, JavaScript needs to be modularized, and modules need to be encapsulated, leaving only