基于正则表达式的替换在js中

Question

实际上我想要替换一个字符串，除非它是圆括号。

例如：

JAVA is a nice language. (JAVA) has lots of features. JAVA is portable. (JAVA) even comes in 64 bit.

现在如果我用C代替JAVA：

然后所需的输出是：

C is a nice language. (JAVA) has lots of features. C is portable. (JAVA) even comes in 64 bit. 

即使是java也可以像

这样的子字符串

 XJAVAX is a nice language. (XJAVAX) has lots of features. JAVA is portable. (JAVA) even comes in 64 bit.

现在如果我用C代替JAVA：

然后预期输出：

XCX is a nice language. (XJAVAX) has lots of features. C is portable. (JAVA) even comes in 64 bit.

Answer 1

由于JavaScript没有后视，最简单的方法可能是改变：

str = str.replace(/\(JAVA\)|JAVA/g, function(m) {
    return m === "(JAVA)" ? m : "C";
    // Or
    // return m.length === 6 ? m : "C";
});

除此之外，你会尝试simulate look-behind，这在某些方面是可能的，但是很麻烦。