去除所有空格: str = str.replace(/\s+/g,"");
去除两头空格: str = str.replace(/^\s+|\s+$/g,"");
去除左空格: str=str.replace( /^\s*/, '');
去除右空格: str=str.replace(/(\s*$)/g, "");
去除所有空格: str = str.replace(/\s+/g,"");
去除两头空格: str = str.replace(/^\s+|\s+$/g,"");
去除左空格: str=str.replace( /^\s*/, '');
去除右空格: str=str.replace(/(\s*$)/g, "");
转载于:https://www.cnblogs.com/juicy-initial/p/9868428.html