1、添加async:false.即修改为同步了，什么意思？（按同事解释就是，这是等这个ajax有了返回值后才会执行下面的js。一语道破天机，怪不得以前很多ajax调用里面的赋值都不起作用）。这样等ajax给bol赋值完毕后，才执行下面的js部分。而刚刚异步的话，还没有来得及赋值，就已经return了。
$(‘document‘).ready(function() {
function newajax(info) {
$.ajax({
type: ‘get‘,
async: false,
url: ‘user.php‘,
data: info,
success: function(msg) {
if (msg == 1) {
rs = 1;
} else if (msg == 0) {
rs = 0;
} else {
rs = -1;
}
}
});
return rs;
}
$(‘#edit_signature‘).bind(‘click‘,
function() {
$(‘#s1‘).html("<input type=‘text‘ placeholder=‘输入签名‘ class=‘signature‘/>");
$(‘.signature‘).blur(function() {
var signature = $(‘.signature‘).val();
if (signature == ‘‘) {
$(‘.signature‘).hide();
} else {
var info = ‘act=signature&value=‘ + signature;
var msg1 = newajax(info);
if (msg1 == 1) {
showmsg(‘修改成功‘);
$(‘.signature‘).hide();
$(‘#signature‘).html(signature);
} else if (msg1 == 0) {
showmsg(‘修改失败‘);
$(‘.signature‘).hide();
} else {
showmsg(‘请登录‘);
location.href = "http://localhost/bookboss/member/login.php";
}
}
});
});
$(‘#btn-save‘).click(function() {
var name1 = $(‘#name‘).val();
name = encodeURIComponent(name1, ‘UTF-8‘);
var school = $(‘#school‘).val();
school = encodeURIComponent(school, ‘UTF-8‘);
var professional = $(‘#professional‘).val();
professional = encodeURIComponent(professional, ‘UTF-8‘);
var info = ‘act=edit&name=‘ + name + ‘&school=‘ + school + ‘&professional=‘ + professional;
var msg1 = newajax(info);
if (msg1 == 1) {
showmsg(‘修改成功‘);
$(‘#name1‘).html(name1);
} else if (msg1 == 0) {
showmsg(‘修改失败‘);
} else {
showmsg(‘请登录‘);
location.href = "http://localhost/bookboss/member/login.php";
}
});
});
原文：http://my.oschina.net/rain21/blog/418890