在Javascript中将字符串转换为Pascal Case（又名UpperCamelCase） [英] Convert string to Pascal Case (aka UpperCamelCase) in Javascript

问题描述

我想知道如何在javascript（&最常见的正则表达式）中将字符串转换为pascal case字符串。

Id like to know how I can covert a string into a pascal case string in javascript (& most probally regex).

转换示例：

• double-barrel = Double-Barrel


• DOUBLE-BARREL = Double-Barrel


• DoUbLE-BaRRel = Double-Barrel


• double barrel = Double Barrel

• double-barrel = Double-Barrel
• DOUBLE-BARREL = Double-Barrel
• DoUbLE-BaRRel = Double-Barrel
• double barrel = Double Barrel

查看此链接以获取有关Pascal案例的更多信息

Check this link for further info on Pascal Case

推荐答案

s = s.replace(/(\w)(\w*)/g,
        function(g0,g1,g2){return g1.toUpperCase() + g2.toLowerCase();});

正则表达式找到单词（此处使用 \w - 字母数字和下划线），并将它们分成两组 - 第一个字母和其余部分。然后它使用函数作为回调来设置正确的大小写。

The regex finds words (here defined using \w - alphanumerics and underscores), and separates them to two groups - first letter and rest of the word. It then uses a function as a callback to set the proper case.

示例： http://jsbin.com/uvase

或者，这也可行 - 少一点正则表达式和更多的字符串操作：

Alternately, this will also work - a little less regex and more string manipulation:

s = s.replace(/\w+/g,
        function(w){return w[0].toUpperCase() + w.slice(1).toLowerCase();});

我应该添加这不是pascal的情况，因为你有字障碍（ helloworld vs hello-world ）。没有它们，即使使用字典，问题也几乎无法解决。这通常被称为标题案例，虽然它不处理像FBI，the或McDonalds这样的词。

I should add this isn't pascal case at all, since you have word barriers (helloworld vs hello-world). Without them, the problem is almost unsolvable, even with a dictionary. This is more commonly called Title Case, though it doesn't handle words like "FBI", "the" or "McDonalds".

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