使用Javascript搜索电子邮件以获取txt，然后将字符串转换为变量

I am trying to write code to search the following and find "Office Location:" and then take whatever the string after it is into a variable, in this case UK-London I write some basic code to find Office Location but don't know how to select the string after. I think this is something simple and I am an idiot (hopefully because I am still new to this) Thanks! -AlexI am trying to write code to search the followi