js正则移除字符串多处空白和多类型换行符

2021-03-26
/**
 * 过滤所有空格、回车符
 */
function filterEmpty(str) {
	str = str.replace(/(\r\n|\n|\r)/gm, '');
	str = str.replace(/\s+/g, '');
	return str;
}

（详解）定义示例字符串：

var someText = "Here's some text.\n It has some line breaks that will be removed \r using Javascript.\r\n";

A：移除三种类型换行符

someText = someText.replace(/(\r\n|\n|\r)/gm,"");

B：多处空白换用单个空格

someText = someText.replace(/\s+/g," ");

C：移除所有空格

someText = someText.replace(/\s+/g, "");

参考：https://www.textfixer.com/tutorials/javascript-line-breaks.php

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