我正在尝试用javascript创建一个益智游戏。我正在从网址抓取拼图的图像并将其加载到主div中。但是当我加载网页时,它需要一秒钟,直到所有内容都正确加载。我怎样才能让它看起来更流畅?
由于
启动时出现错误的网页:
http://www.acsu.buffalo.edu/~jamesber/GameOne.html#
我的代码:
$(function (){
var plant = "";
$.ajax({"url":"http://beta.botanicalapp.com/api/v1/plants/?photo=true"})
.success(function(fullData){
plant = fullData[2].plant.image_default.url;
$("#puzzle div").css({'background-image':'url('+ plant +')'});
$("#helper").attr("src",plant);
var puzzle = $("#puzzle");
var pieces = $("#puzzle div");
pieces.sort(function (a, b) {
var temp = parseInt(Math.random() * 100);
var isOddOrEven = temp % 2;
var isPosOrNeg = temp > 5 ? 1 : -1;
return (isOddOrEven * isPosOrNeg);
}).appendTo(puzzle);
var timer;
var secs = 0;
var mins = 0;
var millsecs = 0;
var timeString = document.getElementById("time");
timeString.innerHTML = "00:00:00";
function update(){
if(millsecs == 100) {
secs++;
millsecs = 0;
if(secs == 60){
mins++;
secs = 0;
}
}
else {
millsecs++;
}
if((millsecs<10) && (secs<10) && (mins<10)) {
timeString.innerHTML = '0' + mins + ':0' + secs + ':0' + millsecs;
}
else if ((millsecs<10) && (secs<10)) {
timeString.innerHTML = mins + ':0' + secs + ':0' + millsecs;
}
else if ((millsecs<10) && (mins<10)) {
timeString.innerHTML = '0' + mins + ':' + secs + ':0' + millsecs;
}
else if((secs<10) && (mins<10)){
timeString.innerHTML = '0' + mins + ':0' + secs + ':' + millsecs;
}
else if (millsecs<10) {
timeString.innerHTML = mins + ':' + secs + ':0' + millsecs;
}
else if (secs<10){
timeString.innerHTML = mins + ':0' + secs + ':' + millsecs;
}
else if (mins<10) {
timeString.innerHTML = '0' + mins + ':' + secs + ':' + millsecs;
}
else {
timeString.innerHTML = mins + ':' + secs + ':' + millsecs;
}
}
function start(){
timer = setInterval(function() {update()}, 10);
}
start();
initSwap();
function initSwap() {
initDroppable($("#puzzle div"));
initDraggable($("#puzzle div"));
}
function initDraggable($elements) {
$elements.draggable({
appendTo: "body",
helper: "clone",
cursor: "move",
revert: "invalid"
});
}
$("#final").dialog({
autoOpen: false,
modal: true,
width: 900,
resizable: false,
height: 520,
position: [250,75],
dialogClass: "fixed-dialog",
draggable: false
});
function initDroppable($elements) {
$elements.droppable({
activeClass: "ui-state-default",
hoverClass: "ui-drop-hover",
accept: ":not(.ui-sortable-helper)",
over: function (event, ui) {
var $this = $(this);
},
drop: function (event, ui) {
var $this = $(this);
var linew1 = $(this).after(ui.draggable.clone());
var linew2 = $(ui.draggable).after($(this).clone());
$(ui.draggable).remove();
$(this).remove();
initSwap();
var finished = "1,2,3,4,5,6,7,8,9";
var started = '';
$("#puzzle div").each(function(){
var image = $(this).attr("id");
started += image.replace("recordArr_","")+",";
});
started = started.substr(0(started.length)-1);
if(started == finished){
clearTimeout(timer);
$("#thePlant").attr("src",plant);
$("#final").dialog("open");
}
}
});
}
});
});
答案 0 :(得分:1)
一切都发生在Ajax调用的success
/ done
回调中。
即使图像被缓存或类似的东西,你仍然有开销:
这就是启动时滞后的原因。
您应该启动Ajax调用并使用图像处理响应,而不是呈现页面的其余部分。
P.S。
您应该将.success
切换为.done
,因为jQuery的新(呃)延迟对象更喜欢它,而旧方法是deprecated:
弃用注意:自jQuery 1.8起,不推荐使用jqXHR.success(),jqXHR.error()和jqXHR.complete()回调。要准备最终删除的代码,请使用jqXHR.done(),jqXHR.fail()和jqXHR.always()。