[英]How do I remove ONLY JavaScript comments that start with “// ”?
To clarify first, I already have a compression tool that successfully compresses EVERYTHING else so I don't need a long complicated preg_replace
regex, just a simple preg_replace
or str_replace
rule will do. 首先要说明的是,我已经有一个压缩工具可以成功地压缩其他所有东西,因此我不需要很长的复杂的
preg_replace
正则表达式,只需一个简单的preg_replace
或str_replace
规则即可。
I ONLY want to remove JavaScript comments that start with "// " (including the space so I don't erase URLs) up until the new line. 我只想删除以“ //”开头的JavaScript注释(包括空格,因此我不会删除URL)直到新行为止。 THAT'S IT!
而已! Once again, I don't need to replace /* */ or any other variations as I have a script that does that already;
再一次,我不需要替换/ * * /或任何其他变体,因为我已经有一个脚本可以执行此操作; the only thing it's missing is this one feature so I want to clean up the input with this first, then hand it over to the script.
唯一缺少的是此功能,因此我想先清理此输入,然后将其移交给脚本。
Here are screenshots with examples of comments I would like to remove: 以下是我要删除的评论示例的屏幕截图:
I would really appreciate help with this! 我真的很感谢帮助! :-) THANKS!
:-) 谢谢!
Try this code: 试试这个代码:
$re = "~\\n? */{2,} .*~";
$str = "text\n\n/*\ntext\n*\n //example1\n //example2\n\ntext\n\n// example 3";
$subst = "";
$result = preg_replace($re, $subst, $str);
The regex matches two or more /
following by a space like you asked in the question. 正则表达式匹配两个或多个
/
,后跟一个空格,就像您在问题中所问的那样。 When you replace it will erase the whole line or until the spaces and line breaks that were 更换时,它将擦除整行或直到原来的空格和换行符为止
I'd use a regex with the multi-lined modifier , m
, 我会使用带有多行修饰符
m
的正则表达式
/^\h*\/\/.*$/m
This will find any lines that start with a //
regardless of the whitespace preceding it. 这将查找任何以
//
开头的行,而不管其前面的空格如何。 Anything after the first //
will be removed until the end of that line. 第一个
//
之后的所有内容都将被删除,直到该行的末尾。
Regex101 Demo: https://regex101.com/r/tN7nW9/2 Regex101演示: https ://regex101.com/r/tN7nW9/2
You should include your data in the future as a string (not image) so users can run tests on it. 您将来应该将数据作为字符串(而不是图像)包括在内,以便用户可以对其进行测试。
PHP Usage: PHP用法:
echo preg_replace('/^\h*\/\/.*$/m', '', $string);
PHP Demo: https://eval.in/430182 PHP演示: https : //eval.in/430182
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