这个我暂时还没有更好的方法，目前我的想法是，找到要删除的项的索引，取到这一项，然后删除这一项，最后再数组最前方添加这一项。
- for 循环，得到
index - 复制
obj，删除第index项，使用splice方法 - 将复制的obj，放到数组最前方，使用
unshift方法。
这是我本地写的测试：
var lastLoginTenantId = 3;
var dataset = [{"tenantID":0,'s':"dsf"},{"tenantID":1,'s':"dsf"},
{"tenantID":2,'s':"dsf"},{"tenantID":3,'s':"dsf"},
{"tenantID":4,'s':"dsf"},{"tenantID":5,'s':"dsf"}];
var obj = {};
for(var i = 0; i < dataset.length; i++){
if(dataset[i].tenantID == lastLoginTenantId){
//var index = i;
obj =dataset[i];
dataset.splice(i,1);// 第i位删除1项
dataset.unshift(obj)
}
}
测试demo.png
是不是很麻烦，哈哈，要是有更好的方法，请email我：[email protected]
项目中的场景
这里暂时不写了，就是记录一下最后的id，到localStorage里面。
localStorage.setItem("LoginUserId_"+loginUserId, id);
点击登陆按钮，保存最后的租户id到localStorage
loginClick = function (tId) {
var loginUserId = $("#username").val().trim();
if (self.parent.document.loginType != "popup") {
if ($("#p_username").val().indexOf("\"") >= 0) {
alert("用户名不能含有非法字符\"！");
return false;
}
//提交前，增加逻辑判断
toastr.options = {
"positionClass": "toast-top-center"
};
var userId = $("#username").val();
var password = $("#p_password").val();
if(null==userId || ""==userId.trim()){
toastr.error("请输入登陆账号");
return;
}
if(null==password || ""==password.trim()){
toastr.error("请输入登陆密码");
return;
}
//var tenantselect = $("#tenantID");
//var tenantID = tenantselect.val();
var tenantID = tId?tId:"";
$("#tenantID").val(tenantID);
//检测用户账号密码是否相同
var checkParam = {
service: "BC23",
method: "checkPWD",
eiinfo: '{attr:{"service":"BC23","method":"checkPWD","user":"'+userId+'","password":"'+ password +'"},blocks:{}}'
};
var check_status = 0;
$.ajax(
{
type: "POST",
async: false,
url: CONTEXT_PATH + "/EiService",
data: checkParam,
dataType: "json",
success: function (msg) {
var status = msg['status'];
check_status = status;
if (status<0) {
toastr.options = {
"positionClass": "toast-top-center"
};
if(-98==status){
window.location.href = "./DispatchAction.do?efFormEname=ES23&userId="+userId;
return false;
}
if(-99==status){
if(null==tenantID || ""==tenantID){
toastr.info(msg['msg']);
getTenantList();
$("#tenant-model-box").show();
$("#closeModel").click(function(){
$("#searchTenant").val("");
$("#divSelectLi").empty();
$("#tenant-model-box").hide();
});
var selectIndex = -1;
$("#searchTenant").focus();
//$(document).keydown(function(event){
//$(document).keyup(function(event){
$("#searchTenant").keyup(function(event){
var target = event.target;
var selectUi = document.getElementById("divSelectLi");
//取得li的元素
var selectList = document.getElementsByClassName("search-li-tenant");
for(var i=0;i 0){
$("#divSelectLi li").removeClass("gr");
$("#divSelectLi li:nth-child(" + (selectIndex + 1) + ")").addClass("gr");
var id = $("#divSelectLi .search-li-tenant .selectTenantIdLi")[selectIndex].innerHTML;
var loading = '
正在登录中，请等待...';
$("#divSelectLi li:nth-child(" + (selectIndex + 1) + ")").children(".addLoding").empty().append(loading);
localStorage.setItem("LoginUserId_"+loginUserId, id);
loginClick(id);
}
//selectIndex = -1;
}
break;
default:
setTimeout(function(){
$("#divSelectLi").empty();
if ($("#divSelectLi li").length == 0) {
getTenantList();
}
},500);
break;
}
if(selectIndex < 7){
$(".search-result")[0].scrollTop = 0;
}else if(selectIndex < $("#divSelectLi li").length){
$(".search-result")[0].scrollTop = (selectIndex-7)*36;
}else{
selectIndex = -1;
$(".search-result")[0].scrollTop = 0;
}
if(selectIndex>=0){
$("#divSelectLi li:nth-child("+(selectIndex+1)+")").css("borderLeftColor","#ff9900");
}
});
$("#searchTenant").blur(function(){
$("#divSelectLi li").click(function(){
$("#divSelectLi li").removeClass("gr");
var loading = '正在登录中，请等待...';
$(this).addClass("gr");
var id = $(this).children(".selectTenantIdLi").html();
$(this).children(".addLoding").empty().append(loading);
localStorage.setItem("LoginUserId_"+loginUserId, id);
loginClick(id);
});
});
}else{
check_status = 1;
}
}else{
toastr.error(msg['msg']);
}
}
},
error: function (xmlR, status, e) {
check_status = -1;
toastr.error("登陆异常");
}
});
if(check_status<0){
return;
}
$("#p_username").val(userId);
document.getElementById('ef-LoginForm').submit();
}
else {
//$$LOGIN$$:"true" 支持silverlight登录,用于处理session
var cookieStr = window.getTopWnd().document.getElementById("COOKIE").value;
var jsonEi = "{}";
var reqParams = {
service: "EP50",
method: "initLoad",
eiinfo: jsonEi,
$$LOGIN$$: "true",
$$keepSession$$: "true",
p_username: ef.get("p_username").value,
p_password: ef.get("p_password").value,
RELOGIN: ef.get("RELOGIN").value,
COOKIE: cookieStr
};
if ($('#p_captcha').length > 0) {//开启了验证码功能
reqParams = {
service: "EP50",
method: "initLoad",
eiinfo: jsonEi,
$$LOGIN$$: "true",
$$keepSession$$: "true",
p_username: ef.get("p_username").value,
p_password: ef.get("p_password").value,
p_captcha: ef.get("p_captcha").value,
RELOGIN: ef.get("RELOGIN").value,
COOKIE: cookieStr
};
}
$.ajax(
{
type: "POST",
async: false,
url: CONTEXT_PATH + "/EiService",
//data: "service=" + sService + "&method=" + sMethod + "&eiinfo=" + jsonEi,
data: reqParams,
dataType: "json",
success: function (msg) {
ajaxEi = Json2EiInfo.prototype.parseJsonObject(msg);
if (ajaxEi.status == "-1") {
if (isAvailable(msg.msg)) {
$("#loginTip").css("color", "red").text("*" + msg.msg);
}
else {
$("#loginTip").css("color", "red").text("*" + "登录失败，用户名不能为空");
}
}
else {
parent.$.fn.colorbox.close();
var topWnd = getTopWnd();
if (isAvailable(topWnd) && isAvailable(topWnd.lastActivity)) {
topWnd.lastActivity = new Date().getTime();
}
// self.parent.window.lastActivity = new Date().getTime();
}
//用于session恢复.当第一次session失效重登录后，如果当前页面没有刷新而session再次失效，那再页面中保存的保存的sessionId还是原来的值，所以需要更新sessionId
var platSessionId = ajaxEi.get("platSessionId");
if (platSessionId != null && platSessionId.trim() != "")
window.getTopWnd().document.getElementById("COOKIE").value = platSessionId;
},
error: function (xmlR, status, e) {
//20080806增加 当Ajax调用失败是 将ajaxEi置空(hubing)
ajaxEi = null;
$("#loginTip").css("color", "red").text("*" + "AJAX请求异常，登录失败！");
}
});
} //else
}
从本地localStorage获取该用户，最后的登陆租户id，将最后登陆的放在最前方即可。
function getTenantList(){
var loginUserId = $("#username").val().trim();
var tName = $("#searchTenant").val().trim()? $("#searchTenant").val().trim():"";
var lastLoginTenantId = localStorage.getItem("LoginUserId_"+loginUserId);
var param1 = {
service: "BC23",
method: "getTenantList",
eiinfo: '{attr:{"service":"BC23","method":"getTenantList","limit":"-1","offset":"0","showCount":"true","tenantName":"'+tName+'"},blocks:{}}'
};
$.ajax(
{
type: "POST",
async: false,
url: CONTEXT_PATH + "/EiService",
data: param1,
dataType: "json",
success: function (result) {
var resultStatus = result.status;
if(resultStatus=='0') {
var allCount = result.attr.count;
$("#showTenantListCount").html(allCount);
var dataset = result.attr.tenants;
if(dataset.length == '0'){
var createLi = ''+
'
'+
'没有查询到符合条件的记录'+
'
';
$("#divSelectLi").append(createLi);
}
if(lastLoginTenantId){
var obj = {};
for(var i = 0; i < dataset.length; i++){
if(dataset[i].tenantID == lastLoginTenantId){
obj =dataset[i];
dataset.splice(i,1);
dataset.unshift(obj)
}
}
}
for (var i = 0; i < dataset.length; i++) {
if ('社会' == dataset[i].tenantGroupType) {
color = "#ef8c00";
}
if ('企业' == dataset[i].tenantGroupType) {
dataset[i].color = "#43a300";
}
if ('宝钢' == dataset[i].tenantGroupType) {
dataset[i].color = "#0043a3";
}
if ('欧冶' == dataset[i].tenantGroupType) {
dataset[i].color = "#e60012";
}
var createLi = '' +
'' +
'' + dataset[i].tenantName + ' ' +
'' +
'' + dataset[i].tenantGroupType + '' +
' ';
$("#divSelectLi").append(createLi);
}
}
},
error: function (xmlR, status, e) {
console.log(e);
}
});
}