正则表达式替换不是多次开始的所有内容

I am making a parser of sorts in javascript that takes a mathematical expression given to the script as a string, and evaluates it and does some other things with it. If the users want to use builtin Javascript mathematical functions, they have to enter the following string e.g. "1 + Math.log(x)". That becomes very tedious when things get nested e.g "Math.abs(Math.log(Math.pow(x, 2))) + Math.log2(x)". As you can see, the "Math." part of it not only takes longer to write, but makes it less readable. I want to remove that "Math." part. The way I've done it is using simple regex that basically has a list of all Javascript Math constants and methods and simply prepends the "Math." part of it. Simple enough:I am making a parser of sorts in javascript tha