js去除空格、回车并做非空判断

$(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;

});

});