UCS 是 Universal Character Set 的首字母缩写。 在表示一个Unicode的字符时,通常会用“U+”然后紧接着一组十六进制的数字来表示这一个字符。 在 基本多语言平面(BMP) 里的所有字符,要用四个数字(即2字节,共16位,例如U+4AE0,共支持六万多个字符);而在其他平面中的字符则需要使用五或六个数字,这种方式可以称为 代理对(
JavaScript是一种解释执行的脚本语言,是一种动态类型、弱类型、基于原型的语言,内置支持类型,它遵循ECMAScript标准。它的解释器被称为JavaScript引擎,为浏览器的一部分,广泛用于客户端的脚本语言,主要用来给HTML增加动态功能。 几乎所有主流的语言都可以编译为JavaScript,进而能够在所有平台上的浏览器中执行,这也体现了Java...
functionhashIt(data){// The hashvarhash=0;// Length of stringvarlength=data.length;// Loop through every character in datafor(vari=0;i<length;i++){// Get character code.varchar=data.charCodeAt(i);// Make the hashhash=((hash<<5)-hash)+char;// Convert to 32-bit integerhash=hash&...
Mark character strings as literal JavaScript codeYihui Xie
The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!) 什么是字符集 顾名思义,字符集就是字符的集合 。 什么是 ASCII ASCII ((American Standard Code for Information Interchange): 美国信息交换标准代码)是基于拉丁字母的一套电脑编码系统...
log('Encoding does not match UTF8 and SJIS'); } Encoding.convert (data, to[, from]) Converts the character encoding of the given data. Parameters data (Array<number>|TypedArray|Buffer|string) : The code array or string to convert character encoding. to (string|Object) : The character ...
Countable - A JavaScript function to add live paragraph-, word- and character-counting to an HTML element. card - Make your credit card form better in one line of code. stretchy - Form element autosizing, the way it should be. analytics - A lightweight, extendable analytics library designed...
In the above example, we are using thecharCodeAt()method to access the UTF-16 code unit of the character at index5. Since the character present at index5is"m", the method returns UTF-16 code unit of"m". Similarly, for the non-integer index5.2and5.9, the numbers are converted to near...
We can add strings together to make longer strings using the plus character: "Hi there " + "hello"; Alerting If we need to know what’s inside a string we can find out using an alert box like so: alert("Hi there " + "hello"); Add this to your script and press refresh. Nice!
To determine the number of variables JavaScript allows, I have written a little function whose start and end parameters are the character numbers you wish to scan. You can certainly use more than we used in the preceding code, but you ought to log to the console if you start using thousand...