我已将Durandal.js用于我的SPA。我需要在某些页面中将图像幻灯片显示为背景，我正在使用jquery-backstretch。我从网络后端获取图像。在正常速度的页面之间导航时，一切正常。但是，当我从一个具有后伸的页面导航到另一个具有后伸的页面时，第一页中的后伸图像也会在第二页中出现。调试时，只有正确的图像被传递到第二页。幻灯片放映也没有在适当的时间间隔内运行。所以它必须是被调用的后伸。
请告诉我如何阻止先前的后退再次出现。以下是相关的代码段。
这是我的第一页（带有backstretch）viewmodel代码。
var id = 0;
var backstetcharray;
function loadbackstretchb() {
backstetcharray = new Array();
$.each(that.products, function (i, item)
{
if(item.ProductBackImage != "")
{
backstetcharray.push("xxxxxxxxxx" + item.ProductBackImage);
}
}
);
$.backstretch(backstetcharray, { duration: 5000, fade: 1500 });
}
var that;
define(['plugins/http', 'durandal/app', 'knockout'], function (http, app, ko) {
var location;
function callback() {
window.location.href = "#individual/"+id;
// this.deactivate();
};
return {
products: ko.observableArray([]),
activate: function () {
currentpage = "products";
that = this;
return http.get('yyyyyyyyyyyyyyy').then(function (response) {
that.products = response;
loadbackstretchb();
});
},
attached: function () {
$(document).ready(function () {
$('.contacticon').on({
'mouseenter': function () {
$(this).animate({ right: 0 }, { queue: false, duration: 400 });
},
'mouseleave': function () {
$(this).animate({ right: -156 }, { queue: false, duration: 400 });
}
});
});
$(document).ready(function () {
$(".mainmenucont").effect("slide", null, 1000);
});
//setTimeout($(".mainmenucont").effect("slide", null, 1000), 1000);
$(document).on("click", ".ind1", function (e) {
// alert("ind1");
id = e.target.id;
// $(".mainmenucont").effect("drop", null, 2000, callback(e.target.id));
$('.mainmenucont').hide('slide', { direction: 'left' }, 1000, callback);
});
}
}
});
这是我的第二页（带有backstretch）viewmodel代码。（到我导航的地方）
var recs;
var open;
var i, count;
var backstetcharray;
function loadbackstretchc() {
backstetcharray = new Array();
$.each(recs, function (i, item) {
if (item.BackgroundImage != "") {
backstetcharray.push("xxxxxxxxxx" + item.BackgroundImage);
}
}
);
$.backstretch(backstetcharray, { duration: 5000, fade: 1500 });
}
var that;
define(['plugins/http', 'durandal/app', 'knockout'], function (http, app, ko) {
var system = require('durandal/system');
var location;
function menucallback() {
window.location.href = location;
// this.deactivate();
};
return {
activate: function (val) {
currentpage = "recipes";
open = val;
that = this;
var pdts;
recs;
var recipeJson = [];
http.get('yyyyyyyyyyyyyy').then(function (response) {
pdts = response;
http.get('yyyyyyyyyyyy').then(function (response1) {
recs = response1;
loadbackstretchc();
$.each(pdts, function (i, item) {
var json = [];
$.each(recs, function (j, jtem) {
if (item.DocumentTypeId == jtem.BelongstoProduct) {
json.push(jtem);
}
});
jsonitem = {}
jsonitem["product"] = item.ProductName;
jsonitem["link"] = "#" + item.UmbracoUrl;
jsonitem["target"] = item.UmbracoUrl;
jsonitem["recipes"] = json;
recipeJson.push(jsonitem);
});
// that.products = recipeJson;
count = recipeJson.length;
i = 0;
return that.products(recipeJson);
});
});
},
attached: function(view) {
$(document).ready(function () {
$('.contacticon').on({
'mouseenter': function () {
$(this).animate({ right: 0 }, { queue: false, duration: 400 });
},
'mouseleave': function () {
$(this).animate({ right: -156 }, { queue: false, duration: 400 });
}
});
});
$(document).ready(function () {
$(".mainmenucont").effect("slide", null, 1000);
});
$(document).on("click", ".recipeclick", function (e) {
console.log(e);
location = "#recipe/" + e.target.id;
$('.mainmenucont').hide('slide', { direction: 'left' }, 1000, menucallback);
});
$(document).on("click", ".locclick", function (e) {
if (e.handled != true) {
if (false == $(this).next().is(':visible')) {
$('#accordion ul').slideUp(300);
}
$(this).next().slideToggle(300);
e.handled = true;
}
});
},
products: ko.observableArray([]),
expand: function() {
++i;
if (i == count) {
$("#" + open).addClass("in");
}
}
};
});