JavaScript

Implement ifelse operations by using the and or operator priority to simplify your code. The Code is as follows:

We mainly use recursion and iteration to traverse json members to generate html elements. The better thing is that num can write a lot of code for the number of loops. For specific applications, we see json-to-html trio. Raw Material: json The

This article describes the constructor attributes in JavaScript. This attribute is an important basis for understanding JavaScript classes and inheritance. The constructor attribute always points to the constructor that creates the current object.

Answers and references for JavaScript question-type Q & A are common issues during development. 1. How to obtain a formText in the selection part of the domain?

In this chapter, I will explain the best way to register events for elements, that is, to ensure that a specific event occurs on a specific HTML element and can run a specific script. Registering events in the oldest JavaScript browser can only pass

In JavaScript, we can use three loops: for (;), while (), and for (in). in fact, the efficiency of for (in) in these three loops is very poor, because he needs to query hash keys, as long as they can be used as little as possible. It has been

Recently, I am looking at the source code of the YAHOO. util. YUILoader class. Here is a method to exclude repeated array items, which makes me feel very clever... Looking at the source code of YUI from time to time, there will always be some gains.

In js, if you use parseInt (& quot; 08 & quot;), 8 is generally returned, but 0 is actually returned. but 8 is returned with Number (& quot; 08 & quot. however, parseInt ("08", 10) can return 8. To clarify the differences between the two, See the

There are already many jQuery-based form verification plug-ins on the Internet, but I will continue to do this, this is because the form verification plug-in has moved the value from my previous Personal JS framework (I have been slowly investing in

I have studied table sorting before. I found some code to study online. Barely used it. We later found that when a hyperlink is dynamically added to the cell, or some blank spaces exist in the column, the sorting will fail. Code: similar to the code

JS programming is most commonly used in the definition of two object classes. Either of the following two methods can achieve the same effect! The following two methods are commonly used in daily JS programming: 1. Mixed constructor and prototype

Cross-origin access on the browser side has always been a problem. Most R & D personnel have a good attitude towards js, and the scars are lost. Therefore, it hurts from time to time when the problem occurs. I remember using iframe and scriptdomain

First declare something to eliminate ambiguity: JavaScript in this blog refers to JavaScript in the general sense, it is not limited that the runtime environment "global variables" that "claim to be JavaScript" and "Global Object Attributes" refer

The currying function is a function that returns a function and is one of the greatest applications of a closure. For more detailed definitions of closures, see here and here. The following is a definition of the currying function. The earliest

In this topic, we will discuss JavaScript testing to check whether the component status and working method meet expectations. We will also introduce a testing method that facilitates the compilation of test cases. The tests mentioned here are of

Variable scope is a topic involved in every programming language. It is also a required knowledge point for a programmer. It is helpful for you to deeply understand the variable scope and write stable programs. JavaScript itself, as a simple

In JavaScript, cookies are complicated. In ASP, we only need to know the cookie name and cookie value. In JS, we are faced with cookie strings, write this string to the client and parse it yourself. 1. Starting from cookie writing. Var the_date =

The functions provided in the previous section have completely implemented cross-browser functions. However, the implementation of IE is extremely poor, using multiple tables and filters that have always been criticized. Another powerful tool for IE

An object is a basic unit of JavaScript. This chapter describes the most important parts of JavaScript: References, function overloading, scope, closure, and context. With this knowledge, object-oriented development will become simple. 1. Reference

This article mainly introduces the digital countdown Effect of JS web pages. It is a very practical javascript countdown effect and has some reference value, if you need it, refer to the example in this article to describe the digital clock effect