Javascript从文本中提取与正则表达式匹配的字符串
[英]Javascript extract strings that match regex from text
问题描述
I'm trying to get a set of strings from a paragraph that match the format of 4chan's quotes: >>1111111 where it starts with >> followed by 7 digits.
我试图从与 4chan 引号格式匹配的段落中获取一组字符串： >>1111111以>>开头，后跟 7 位数字。
>>1111000
>>1111001
Yes, I agree with those sentiments.
Both >>1111000 and >>1111001 would be extracted from the text above which I would then split into the digits after. >>1111000和>>1111001都将从上面的文本中提取出来，然后我将其拆分为后面的数字。
4 个解决方案
解决方案1
1 2020-11-23 09:35:26
您可以使用此正则表达式
/[>]{2}[0-1]{7}/
解决方案2
1 已采纳 2020-11-23 09:43:32
You can use the following which will match lines starting with 2 > characters followed by 7 digits:您可以使用以下内容匹配以 2 >字符开头后跟 7 个数字的行：
const regex =/^[>]{2}[\\d]{7}$/gm; const text = `>>1234567 >>6548789 foo barr`; const matches = text.match(regex); console.log(matches);
解决方案3
0 2020-11-23 11:07:46
There appears to be some answers, but since it's a topic I would like to understand better here are my two cents.似乎有一些答案，但由于这是一个主题，我想更好地理解这里是我的两分钱。 In the past this answer has helped me a lot and online regex sites are also great, such as this one过去， 这个答案对我有很大帮助，在线正则表达式网站也很棒，例如这个
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Parse Test</title> </head> <body> <div > <text id="ToParse"> >>1111000 <br> >>1111001 <br> Yes, I agree with those sentiments. </text> </div> <script> try { var body = document.getElementById('ToParse').innerHTML; console.log(body); } catch (err) { console.log('empty let body,' + " " + err); } function parseBody () { // from HTML // function parseBody (body) { // const regex = /(>>)([0-9]*)\\w+/gm; // from JS const regex = /(>>)([0-9]*)\\w+/gm; const body = ` >>1111000 <br> >>1111001 <br> Yes, I agree with those sentiments.`; let m; while ((m = regex.exec(body)) !== null) { // This is necessary to avoid infinite loops with zero-width matches if (m.index === regex.lastIndex) { regex.lastIndex++; } // The result can be accessed through the `m`-variable. m.forEach((match, groupIndex) => { console.log(`Found match, group ${groupIndex}: ${match}`); }); } }; parseBody(body); // </script> </body> </html>
解决方案4
0 2020-11-23 11:14:23
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