Expando properties are dynamically added properties in JavaScript. The ES5 technique does not support expando properties since accessors have to be predefined per property to be able to intercept operations. This is a technical reason why central stores with a predefined set of keys are trending now...
This is the fourth chapter of the Writing a JavaScript framework series. In this chapter, I am going to explain the dirty checking and the accessor data binding techniques and point out their strengths and weaknesses. The series is about an open-source client-side framework, called NX. During...
Chapter 1. Writing Your First JavaScript Program By itself, HTML doesn’t have any smarts: It can’t do math, it can’t figure out if someone has correctly filled out a form, … - Selection from JavaScript & jQuery: The Missing Manual, 3rd Edition [Book
First, JavaScript allows us to carry out operations using the standard arithmetic operators of addition, subtraction, multiplication, and division. var theSum = 4 + 3; As you’ll have guessed, after this statement has been executed the variable theSum will contain a value of 7. We can use...
(Replace“ at” with @.Don’tput email addresses on a website with the @ intact, as they will be grabbed by “spiders” for advertising mailing lists.Use a JavaScript program to dynamically construct the address from unrecognizable parts, or otherwise obscure it as above.Thanks to Jens Laurit...
In this chapter, I explain some of the techniques I use to create better JavaScript. This is not a language guide, and I won't be demonstrating any code hacks or tweaks. My coding preferences are your maintenance nightmares, and vice versa. I have seen otherwise mild-mannered people end ...
writing a javascript module ready for ES6 import javascript模块化是一个比较大也是比较容易混淆的topic.通常几乎所有的第三方Library都支持CMD,AMD,ES6,Global object方式来引用lib所暴露出来的服务。 那么如果我们希望自己写一个lib,并且作为模块能被其他模块自由引用应该怎么写呢?
JavaScript (ECMA-262) doesn't provide developers with the means to import such modules of code in a clean, organized manner. It's one of the concerns with specifications that haven't required great thought until more recent years where the need for more organized JavaScript applications became ...
The compiler for writing next generation JavaScript. Supporting Babel Babel (pronounced "babble") is a community-driven project used by many companies and projects, and is maintained by a group of volunteers. If you'd like to help support the future of the project, please consider: Giving de...
The next example demonstrates how unintended floating point arithmetic can spread throughout a JavaScript program. To avoid it, explicitly tell the JavaScript runtime to use integer arithmetic, particularly when performing division. Since you can't convey this intent by using the int type (it doesn...