追加后的jQuery回调 [英] jQuery callback after append
问题描述
我有以下的code:
HTML
< DIV ID =身体与GT;< / DIV>
JS
VAR网站= {'pageData':[
{
loadInTo':'#aboutUs',
URL:aboutUs.html',
urlSection':'.sectionInner
},
{
loadInTo':'#whatWeDo',
URL:whatWeDo.html',
urlSection':'.sectionInner
},
{
loadInTo':'#ourValues',
URL:ourValues.html',
urlSection':'.sectionInner
},
{
loadInTo':'#ourExpertise',
URL:ourExpertise.html',
urlSection':'.sectionInner
}
]}对于(i = 0; I< site.pageData.length;我++){
VAR装载机= site.pageData [I] $('#身体')追加('< DIV ID =+ loader.loadInTo +'级=部分/>');
$(loader.loadInTo).load(loader.url +''+ loader.urlSection);
}
什么我做的是通过网站变量循环和使用具备ID集loadInTo'jQuery的append方法写出一些div的,这工作正常。上述过程完成后我想使用jQuery的load方法与其他网页的HTML来填充的div。有没有做一个回调追加div的后面?是这样的:
$('#身体')追加('< DIV ID =+ loader.loadInTo +'级=部分/>',函数() {
$(loader.loadInTo).load(loader.url +''+ loader.urlSection);
});
jQuery的不支持 .append
的回调。此外,它是很多更有效追加在一次数据,而不是调用 .append
的每个元素。请参阅下面的code。
的每一个元素到追加添加到字符串。一旦串完成后,标记添加,和HTML被追加。然后,轮询被激活,检查标记
元素是否在DOM存在。如果它存在,轮询器清零,该标记被删除,并且code执行
更新: .substr(1)
当ID设置时,因为ID不应该是由#pfixed $ P $
。
VAR toAppend ='';
VAR markerID ='标记结束追加'+(新日).getTime(); //随机
对于(VAR I = 0; I< site.pageData.length;我++){
VAR装载机= site.pageData [I]
toAppend + ='< DIV ID =+ loader.loadInTo.substr(1)+'级=部分/>';
}
toAppend + ='< DIV ID =+ markerID +'>< / DIV>';
$('#身体')追加(toAppend);
VAR轮询= window.setInterval(函数(){
VAR检测=的document.getElementById(markerID);
如果(检测){// DOM是更有效
window.clearInterval(轮询);
$(检测)一个.remove(); //删除标记
对于(VAR I = 0; I< site.pageData.length;我++){
VAR装载机= site.pageData [I]
$(loader.loadInTo).load(loader.url +''+ loader.urlSection);
}
}
},100); //检查10倍每秒
I have the following code:
HTML
<div id="body"></div>
JS
var site = { 'pageData' : [
{
'loadInTo' : '#aboutUs',
'url' : 'aboutUs.html',
'urlSection' : '.sectionInner'
},
{
'loadInTo' : '#whatWeDo',
'url' : 'whatWeDo.html',
'urlSection' : '.sectionInner'
},
{
'loadInTo' : '#ourValues',
'url' : 'ourValues.html',
'urlSection' : '.sectionInner'
},
{
'loadInTo' : '#ourExpertise',
'url' : 'ourExpertise.html',
'urlSection' : '.sectionInner'
}
]}
for(i=0; i < site.pageData.length; i++) {
var loader = site.pageData[i];
$('#body').append('<div id="'+ loader.loadInTo +'" class="section" />');
$(loader.loadInTo).load(loader.url + ' ' + loader.urlSection);
}
What I am doing is looping through the site variable and writing out some div's using jQuery's append method that have the id set in 'loadInTo', this works fine. After this is complete I want to use jQuery's load method to populate the divs with HTML from other pages. Is there a to make a callback after appending the div's? something like this:
$('#body').append('<div id="'+ loader.loadInTo +'" class="section" />', function(){
$(loader.loadInTo).load(loader.url + ' ' + loader.urlSection);
});
jQuery doesn't support a callback for .append
. Also, it's much more efficient to append the data at once, rather than calling .append
for each element. See the code below.
Every element-to-append is added to a string. Once the string has finished, a marker is added, and the HTML is appended. Then, a poller is activated, checking whether the marker
element exist in the DOM. If it exists, the poller is cleared, the marker is removed, and the code executes.
Update: .substr(1)
is used when the ID is set, because the ID shouldn't be prefixed by #
.
var toAppend = '';
var markerID = 'mark-end-of-append' + (new Date).getTime(); //Random
for(var i=0; i<site.pageData.length; i++) {
var loader = site.pageData[i];
toAppend += '<div id="'+ loader.loadInTo.substr(1) +'" class="section" />';
}
toAppend += '<div id="' + markerID + '"></div>';
$('#body').append(toAppend);
var poller = window.setInterval(function(){
var detected = document.getElementById(markerID);
if(detected){ //DOM is much more efficient
window.clearInterval(poller);
$(detected).remove(); //Remove marker
for(var i=0; i<site.pageData.length; i++){
var loader = site.pageData[i];
$(loader.loadInTo).load(loader.url + ' ' + loader.urlSection);
}
}
}, 100); //Check 10x per second
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