Login.js
4.28 KB
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'use strict';
var $ = require('jquery');
// 图像验证码URL
var CAPTCHA_IMG_URL = 'captcha?t=',
$captchaImgInput = $('#captcha'),
$captchaImgWrapper = $('.captcha-wrap'),
$captchaImgPic = $captchaImgWrapper.find('#captcha-img'),
$captchaImgTip = $captchaImgInput.siblings('.err-tip');
// click登录
$('#login-btn').on('click', loginAsync);
/** ************************************************************************/
/* 登录函数 */
/** ************************************************************************/
function loginAsync() {
return validateCaptchaImg().then(function() {
return $.ajax({
url: 'login/',
type: 'POST',
dataType: 'json',
data: {
user: $('#user').val(),
password: $('#password').val()
}
});
}).then(function(res) {
if (res.code === 200) {
location.href = '/';
} else if (res.code === 400){
if (res.data.needCaptcha) {
$captchaImgTip.removeClass('hide')
.children('em');
$captchaImgInput.val('');
showCaptchaImgPic();
} else {
location.href = '/';
}
}
});
}
/** ************************************************************************/
/* 验证码刷新 */
/** ************************************************************************/
$captchaImgWrapper.on('click', '.change-captcha, .captcha-img', function() {
$captchaImgPic.attr('src', CAPTCHA_IMG_URL + $.now());
});
/** ************************************************************************/
/* 显示验证码 */
/** ************************************************************************/
function showCaptchaImgPic() {
$captchaImgPic.attr('src', CAPTCHA_IMG_URL + $.now());
$captchaImgInput.val('');
$captchaImgWrapper.removeClass('hide');
}
/** ************************************************************************/
/* 验证验证码是否正确 */
/** ************************************************************************/
// 图像验证码输入框事件
$captchaImgInput.on('blur', validateCaptchaImg);
function validateCaptchaImg() {
// 验证码不可见的时候验证通过
if ($captchaImgWrapper.is(':hidden')) {
return $.Deferred().resolve().promise(); //eslint-disable-line
}
return validateCaptchaImgLocal()
.then(validateCaptchaImgAsync);
}
function validateCaptchaImgAsync() {
return $.ajax({
url: 'checkCaptchaImg/',
type: 'POST',
dataType: 'json',
data: {
verifyCode: getCaptchaImgVal()
}
}).then(function(result) {
var defer = $.Deferred(); // eslint-disable-line
if (result.code === 200) {
hideCaptchaImgTip();
defer.resolve();
} else {
showCaptchaImgTip('验证码不正确');
defer.reject();
}
return defer.promise();
});
}
function validateCaptchaImgLocal() {
var captcha = getCaptchaImgVal(),
err;
var defer = $.Deferred(); // eslint-disable-line
if (captcha !== '') {
if (captcha.length !== 4) {
err = '请输入长度为4字符的验证码';
defer.reject();
} else {
defer.resolve();
}
} else {
err = '请输入验证码';
defer.reject();
}
if (defer.state() === 'resolved') {
hideCaptchaImgTip();
} else {
showCaptchaImgTip(err);
}
return defer.promise();
}
function getCaptchaImgVal() {
return $.trim($captchaImgInput.val());
}
function hideCaptchaImgTip() {
return errTipHide($captchaImgTip, $captchaImgInput);
}
function showCaptchaImgTip(msg) {
return errTipShow($captchaImgTip, $captchaImgInput, msg);
}
function errTipHide($tip, $input) {
$tip.addClass('hide');
//$input.removeClass('error');
}
function errTipShow($tip, $input, msg) {
$tip.removeClass('hide').children('em').empty().html(msg);
//$input.addClass('error');
}