去掉字符串前后所有空格的正则表达式

/**去掉字符串前后所有空格*/function trim(str){ return str.replace(/(^/s*)|(/s*$)/g, ""); } //计算标题长度function getNickNameLength(){var title = $("#title").val();var len = 0;for (var i = 0; i < title.length; i++) {var a = title.charAt(i);if (a.match(/[^/x00-/xff]/ig) != null){len += 2;}else{len += 1;}}return len;} //验证活动标题function vailTitle(){//var title = $("#title").val();var title =trim($("#title").val());var flag = false;var message = "";var length = getNickNameLength();if(title == ''){message = "标题不能为空！";}else if(length>20){message = "标题为20个字符内！";}else{flag = true;}if(!flag){$("#lr1").html(message);}else{$("#lr1").html("");}return flag;}//光标离开的时候校验$("#title").blur(function(){vailTitle();});//获得焦点的时候隐藏/* $("#title").on('keyup',function(e){$("#lr1").html("").hide();}); */$("#title").focus(function(){$("#lr1").html("");});

-split $a

$a -split '/s+'$a -replace ("/s+","`n")

[regex]::split($a,"/b/s+/b")

[regex]::replace($a,"/b/s+/b"," ").split(" ")

[regex]::matches($a,"/b/S+/b") | %{$_.value}