js去除回车与空格

$(function() {
?? ?var flag = true;
?? ?$("#replyContent").blur(
?? ??? ??? ?function() {
?? ??? ??? ??? ?$("#content_info").html("");
?? ??? ??? ??? ?var str = $(this).val();
?? ??? ??? ??? ?var content="";
?? ??? ??? ??? ?content= str.replace(/\s+/g, "");
?? ??? ??? ??? ?if (content.length == 0) {
?? ??? ??? ??? ??? ?$("#content_info").css("color", "red").html("内容不能为空")
?? ??? ??? ??? ??? ??? ??? ?.fadeIn("slow");
?? ??? ??? ??? ??? ?flag = false;
?? ??? ??? ??? ?} else {
?? ??? ??? ??? ??? ?flag = true;
?? ??? ??? ??? ?}
?? ??? ??? ?});
?? ?$("#replySubmit").click(function() {
?? ??? ?return flag;
?? ?});
});