function trimRight(s){ if(s == null) return ""; var whitespace = new String(" \t\n\r"); var str = new String(s); if (whitespace.indexOf(str.charAt(str.length-1)) != -1){ var i = str.length - 1; while (i >= 0 && whitespace.indexOf(str.charAt(i)) != -1){ i--...
js string trim实现 String.prototype.trim =function() {varstr =this, whitespace= ' \n\r\t\f\x0b\xa0\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u200b\u2028\u2029\u3000';for(vari = 0,len = str.length; i < len; i++) {if(whitespace.indexOf(str....
第一种:循环检查替换 [javascript] //供使用者调用 function trim(s){ return trimRight(trimLeft(s)); } //去掉左边的空白 function trimLeft(s){ if(s == null) { return ""; } var whitespace = new String(" \t\n\r"); var str = new String(s); if (whitespace.indexOf(str.charAt(0))...
//去掉右边的空白 www.2cto.com function trimRight(s){ if(s == null) return ""; var whitespace = new String(" \t\n\r"); var str = new String(s); if (whitespace.indexOf(str.charAt(str.length-1)) != -1){ var i = str.length - 1; while (i >= 0 && whitespace.indexOf(...
具体的算法为：function trim(s){return trimRight(trimLeft(s)); } //去掉左边的空白 function trimLeft(s){if(s == null) {return "";}var whitespace = new String(" \t\n\r");var str = new String(s);if (whitespace.indexOf(str.charAt(0)) != -1) {var j=0, i =...
[javascript] //供使用者调用 function trim(s){ return trimRight(trimLeft(s)); } //去掉左边的空白 function trimLeft(s){ if(s == null) { return ""; } var whitespace = new String(" \t\n\r"); var str = new String(s); if (whitespace.indexOf(str.charAt(0)) != -1) { ...
String.prototype.trim = function() { return this.replace(/^\s+/, '').replace(/\s+$/, ''); } 1. 2. 3. 和实现1 很相似,但稍慢一点,主要原因是它最先是假设至少存在一个空白符。Prototype.js使用这种实现,不过其名字为strip,因为 Prototype的方法都是力求与Ruby同名。
Today, we’re going to look at a few different ways to remove whitespace from the start or end of a string with vanilla JavaScript. Let’s dig in. The String.trim() method You can call the trim() method on your string to remove whitespace from the beginn
第一种:循环检查替换 [javascript] //供使用者调用 function trim(s){ return trimRight(trimLeft(s)); } //去掉左边的空白 function trimLeft(s){ if(s == null) { return ""; } var whitespace = new String(" \t\n\r"); var str = new String(s); if (whitespace.indexOf(s joshua317 201...
如制表符 (`'\t'`)、换行符 (`'\n'`)、回车符 (`'\r'`)、垂直制表符 (`'\v'`)、换页符 (`'\f'`)等。 ```javascript let mixedWhitespaceString = "\t\nHello, JavaScript!\v\f"; let cleanedString = mixedWhitespaceString.trim(); console.log(cleanedString); // 输出: "Hello, ...