使用正则表达式删除以Javascript中的单词开头的行 [英] Delete line starting with a word in Javascript using regex

问题描述

我的文字很少.

随机14637547548546546546sadas3463427
随机1463754754854654654sadsa63463427
Macroflex 1463754754854654sada65463463427
随机146375475485465465sdas463463427
随机1463754754854654fdasf65463463427

Random 14637547548546546546sadas3463427
Random 1463754754854654654sadsa63463427
Macroflex 1463754754854654sada65463463427
Random 146375475485465465sdas463463427
Random 1463754754854654fdasf65463463427

我想找到以 Macroflex 开头的行(在本例中)并替换/删除它.到目前为止，这就是我所要做的...我已经多次尝试使用正则表达式，但是这使我的头部受伤了.谁能给我建议?

I would like to find a line what starts with Macroflex (in this case) and replace/delete it. This is what I have so far... I have tried over and over with regex, but it makes my head hurt. Can anyone give me an advice?

var myRegex = data.replace('Macroflex', '')

推荐答案

您必须替换到该行的末尾:

You have to replace to the end of the line:

var myRegex = data.replace(/^Macroflex.*$/m, '');

请注意，您必须指定 m 标志，以使 ^ 和 $ 使用换行符.

Note that you have to specify the m flag to let ^ and $ work with newlines.

如果要在行后删除换行符，可以将其匹配:

If you want to remove the newline after the line, you can match it:

var myRegex = data.replace(/^Macroflex.*\n?/m, '');

因为.与换行符不匹配.

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