javascript - 用新行删除大量空白

目前，我的应用程序像这样保存锻炼日志。

Start time: 8:49:41 PM                                                     Objective: 17 pushups a minute for 1 hour                                                                      Total: 1020 pushups                                                     59 minutes have gone by                                                     0 pushups remaining                                                     0 minutes remaining                                                     Times Paused: 0                                                     Finished at: 9:49:41 PM

我正在尝试通过使用...来删除大量的空白和换行。

string.trim().replace(/[\s]/g," ").toString()

目的是保存文件，并用新行删除大量空白，以便像这样轻松阅读...

Start time: 8:49:41 PM
Objective: 17 pushups a minute for 1 hour
Total: 1020 pushups
59 minutes have gone by
0 pushups remaining
0 minutes remaining
Times Paused: 0
Finished at: 9:49:41 PM

因此，我的问题很简单。

如何用换行符删除大量空白？

var string = output.textContent.toString();

console.log(string.trim().replace(/[\s]/g," ").toString())

<div id="output">
                <h1>
                  Start time: 8:49:41 PM
                </h1>
                <h1>
                  Objective: 17 pushups a minute for 1 hour
                </h1><br>

                <h1>
                  Total: 1020 pushups
                </h1>
                <h1>
                  59 minutes have gone by
                </h1>
                <h1>
                  pushups remaining
                </h1>
                <h1>
                  0 minutes remaining
                </h1>
                <h1>
                  Times Paused: 0
                </h1>
                <h1>
                  Finished at: 9:49:41 PM
                </h1>
              </div>

问题解决了，感谢Emma's的出色帮助...

string.trim().replace(/\s{2,}/gm,"\n").toString()

最佳答案

也许\s{2,}可能起作用，否则，可以尝试用新行替换\s{3,}或\s{4,}:

const regex = /\s{2,}/gm;
const str = `Start time: 8:49:41 PM                                                     Objective: 17 pushups a minute for 1 hour                                                                      Total: 1020 pushups                                                     59 minutes have gone by                                                     0 pushups remaining                                                     0 minutes remaining                                                     Times Paused: 0                                                     Finished at: 9:49:41 PM
`;
const subst = `\n`;

// The substituted value will be contained in the result variable
const result = str.replace(regex, subst);

console.log(result);