JS regular expression to remove spaces and newlines (recommended)

When I was programming a few days ago, I encountered a problem that took me a long time to solve. It really drove me crazy! Putting a string into setTimeout cannot execute the method. Later, I found out that it was because there was an extra newline after the string. I couldn't see it unless I looked carefully. I just used regular expressions to remove the newline.

//去除空格 
String.prototype.Trim = function() { 
return this.replace(/\s+/g, ""); 
} 
 
//去除换行 
function ClearBr(key) { 
key = key.replace(/<\/?.+?>/g,""); 
key = key.replace(/[\r\n]/g, ""); 
return key; 
} 
 
//去除左侧空格 
function LTrim(str) { 
return str.replace(/^\s*/g,""); 
} 
 
//去右空格 
function RTrim(str) { 
return str.replace(/\s*$/g,""); 
} 
 
//去掉字符串两端的空格 
function trim(str) { 
return str.replace(/(^\s*)|(\s*$)/g, ""); 
} 
 
//去除字符串中间空格 
function CTim(str) { 
return str.replace(/\s/g,&#39;&#39;); 
} 
 
//是否为由数字组成的字符串 
function is_digitals(str) { 
var reg=/^[0-9]*$/; //匹配整数 
return reg.test(str); 
}

Now I find that I like to use regular expressions more and more, haha! It is relatively simple and intuitive. Of course, the prerequisite is that you are familiar with regular expressions. I also tried to write this JS method to delete newlines, and it really worked for me!

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