我的页面中有几个不同的地方我渲染它以设置这样的变量
<script>
videoContent[{{ ordernumber }}]='video={{ c.data[0] }}&height={{ c.data[1] }}&width={{ c.data[2] }}&codec={{ c.data[3] }}&fullscreen={{ data5 }}';
</script>
我的问题是我用ajax刷新了整个页面，当我这样做时，这段代码不再执行。我不能真正为脚本块设置一个 id，因为其中许多块将被循环出，我不知道要调用哪一个 eval()。
我可以以某种方式将此声明附加到像“myDeclarationObject”这样的函数或对象，然后在该对象上调用 eval() 以及页面刷新吗？
我知道我可以学习 javascript 的具体细节，但我的时间很短，如果你单枪匹马开发一个应用程序，你需要学习很多东西 =)
更多示例代码...
<!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 4.01 Transitional//EN' 'http://www.w3.org/TR/html4/loose.dtd'>
<head>
<title>$title</title>
<meta content='text/html; charset=utf-8' http-equiv='Content-Type' />
<script src="/symfony/web/script/jquery-1.8.2.min.js" type='text/javascript'></script>
<script src="/symfony/web/script/slideshow.js" type='text/javascript'></script>
<script type='text/javascript'>
/* set globals */
var newContent = 'blank';
var currentUri = '/symfony/web/app.php/Screen/showContainer/39';
/* fire the slideshow from slide 1 once document is finished loading */
$(document).ready(function(){
console.log('start of slideshow');
slideshow(1);
</script>
</head>
<body id="slideshow_body">
<script id='pauseTimesScript' type='text/javascript'>
/* initialize the array to keep track of which slides have videocontent */
try {
videoContent=null;
videoContent=undefined;
videoContent = new Array();
/*alert('satte först till null, deklarerade sedan om.');*/
} catch(e) {
videoContent = new Array();
/*alert('deklarerade utan att först sätta null.');*/
}
/* Define pauseTimes (array holding duration of each slide) */
try {
pauseTimes=null;
pauseTimes=undefined;
pauseTimes = new Array();
setPauseTimes();
/*alert('satte först till null, deklarerade sedan om.');*/
} catch(e) {
pauseTimes = new Array();
setPauseTimes();
/*alert('deklarerade utan att först sätta null.');*/
}
/* This function sets pausetimes as well as initializes the array for videocontent */
function setPauseTimes() {
pauseTimes[1]=2000;
videoContent[1]=null;
pauseTimes[2]=15000;
videoContent[2]=null;
pauseTimes[3]=2000;
videoContent[3]=null;
pauseTimes[4]=2000;
videoContent[4]=null;
pauseTimes[5]=1000;
videoContent[5]=null;
pauseTimes[6]=0;
videoContent[6]=null;
}
</script>
<div id="avbrott">
Tillfälligt avbrott, visar cachelagrat innehåll sedan 2012-11-05 10:23:31
</div>
<div id="canvas">
<div class="slide" id="slide1">
<div id="slide_bg">
<div id="preview_title">
Egypt rocks!
</div>
<div></div>
<p id="preview_data_6">Lorem ipsum
dolor sit amet, consectetur adipiscing elit. Suspendisse feugiat
pharetra eros, vitae ullamcorper tellus condimentum sit amet.
Pellentesque habitant morbi tristique senectus et netus et malesuada
fames ac turpis egestas. Suspendisse in leo erat. Aliquam interdum
molestie tortor, nec lacinia mauris viverra eget. Suspendisse aliquam
tempor scelerisque. Proin vel purus nunc. Pellentesque ut sapien
libero.<br /></p>
</div>
</div>
<div class="slide" id="slide2">
<div id="slide_bg">
<img src="/symfony/web/style/images/ajax-loader3.gif" /></div>
<div id="no_preview_text"></div>
<script id="videoContentScript2">
videoContent[2]='video=video.avi&height=800&width=600&codec=h264&fullscreen=0';
</script>
</div>
<div class="slide" id="slide3">
<div id="slide_bg">
<div id="preview_title">
info
</div>
<div></div>
<p id="preview_data_6">In ornare
fringilla convallis. In cursus pellentesque elit a iaculis. Fusce
rutrum rutrum neque quis molestie. Fusce id lacus in est iaculis
eleifend venenatis eget ante. Sed eget augue sed nisl scelerisque
fermentum eget at arcu. Donec placerat turpis non sapien scelerisque
tempus. Etiam imperdiet urna sit amet nulla convallis a facilisis dui
scelerisque. Ut sed eros a velit venenatis lacinia ut id risus. Duis
aliquam augue in erat malesuada ut eleifend justo condimentum. Praesent
quis urna nisl. Vestibulum suscipit tincidunt nisl id tincidunt. Nunc
ac ante sed lectus scelerisque blandit. Fusce ultrices, nulla nec
porttitor dapibus, tellus libero fringilla odio, semper tincidunt
mauris velit eu augue. Duis ut massa sed nibh auctor malesuada id eget
ipsum.</p>
</div>
</div>
<div class="slide" id="slide4">
<div id="slide_bg">
<div id="preview_title">
Lite lek
</div>
<div></div>
<p id="preview_data_6">Morbi ac
rhoncus velit. Nunc blandit urna eu mi tempus volutpat. Quisque vel
eros tortor. Sed fringilla, magna sit amet luctus imperdiet, urna
libero dapibus nulla, in facilisis sapien ante nec ipsum. Maecenas
suscipit orci nec turpis iaculis porttitor. Proin blandit tortor a
magna porttitor malesuada. Sed porta quam sodales est sollicitudin
vitae mattis quam consequat. Cum sociis natoque penatibus et magnis dis
parturient montes, nascetur ridiculus mus. Ut eget accumsan ligula.
Fusce a urna in diam sollicitudin ullamcorper. Donec et tellus quis
justo scelerisque fermentum. Nunc molestie malesuada odio laoreet
fermentum. Proin vel vestibulum nunc. Aliquam odio sem, elementum vel
bibendum sit amet, ullamcorper quis tortor. Donec tempus massa
pellentesque metus ornare eget laoreet enim porta. Nullam facilisis
tempus neque vitae bibendum.</p>
</div>
</div>
<div class="slide" id="slide5">
<div id="slide_bg">
<div id="preview_title">
Feel the rythm
</div>
<div></div>
<p id="preview_data_6"><br />
<br />
<br />
<br />
The rythm of the night =p</p>
</div>
</div>
<div class="slide" id="slide6">
<div id="slide_bg">
<div id="preview_title">
skipme
</div>
<div></div>
<p id="preview_data_6">skipme</p>
</div>
</div>
</div>
</body>
</html>
您可能会注意到，每个 id 为 slide1、slide2 等的 div 都是根据某个模板循环出来的。除了 slide2 之外的所有幻灯片都是模板类型，没有我所说的这个脚本块，但是 slide2 有，而且可能还有更多。
有没有一种将这些数据放入的好方法，而不是像我在这里那样渲染一个脚本块？
在我初始化数组 videoContent 并用空值声明它时，页面还不知道它将用这个值填充数组的 number2。
这是幻灯片和 ajaxUpdate 脚本：
/* The actual slideshow function (calling itself for each new slide) */
function slideshow(slide) {
if(pauseTimes[slide]==null) {
console.log('no slide defined, so update the whole thing');
ajaxUpdate();
}
else if (pauseTimes[slide]==0) {
console.log('pauseTime is zero so move to next slide');
slideshow(slide+1);
}
else if (pauseTimes[slide]>0) {
/* if there is another slide after the one currently showing... */
skip=0; //wheather to skip this slide
//check for video stuff
if(videoContent[slide] != null) {
if (parent.xPos) {
myXpos = Math.round(parent.xPos)
}
else {
myXpos = 0;
}
if (parent.yPos) {
myYpos = Math.round(parent.yPos)
}
else {
myYpos = 0;
}
//These position variables are set by a script in screen_base.html.twig
positionString = '&x=' + myXpos + '&y=' + myYpos;
//the videoContent[slide] is populated from the template for the video slide
videoCallstring = 'http://127.0.0.1/index.php?' + videoContent[slide] + positionString;
//call by ajax:
window.skip=1;
jQuery.ajax({
url: videoCallstring,
success: function(result) {
window.skip=1;
/*
if(result.isOk == false) {
alert(result.message);
}
else {
alert("success =)");
}
* */
},
async: false
});
}
else {
//do nothing
}
if (skip == 1) {
slideshow(slide+1);
}
else {
$('#slide'+slide).
fadeIn(1500,function(){}).
delay(pauseTimes[slide]).
fadeOut(1500,function(){slideshow(slide+1);});
}
}
}
/* The update routine at the end of each slideshow */
function ajaxUpdate() {
//Load current uri again asynchroneously
var jqxhr = $.get(currentUri)
.success(function(data) {
newContent = data;
//make sure we got the end token (</body>) so that our transmission wasn't interrupted in the middle of the request
endtoken_test = newContent.search('</body>');
//strip of everything before starttoken (<body>)
newContent = newContent.substring(newContent.indexOf('<body id="slideshow_body">') +26 );
//strip of everything after endtoken (</body>)
newContent = newContent.slice(0, newContent.lastIndexOf("</body>"));
if (endtoken_test != -1) {
//We found the endtoken which means the whole page was returned
//replace the innerHTML of body with the new stuff
document.getElementById('slideshow_body').innerHTML=newContent;
//Ta bort skylten om tillfälligt avbrott (om den visades)
document.getElementById('avbrott').style.display = 'none';
//update the pausetimes
ie_compatible_eval(document.getElementById('pauseTimesScript').innerHTML)
//update the videoContents
/* Loop out the scriptblocks in a try/catch way, loop until max number in pauseTimes is reached */
//run the slideshow anew
slideshow(1);
}
else {
/* if no content (or at least not all of it) could not be downloaded from server */
document.getElementById('avbrott').style.display = 'block';
slideshow(1);
}
})
.error(function() {
newContent = 'blank';
/* if no content (or at least not all of it) could not be downloaded from server */
document.getElementById('avbrott').style.display = 'block';
slideshow(1);
});
}
/* eval() som även funkar i explorer, används för att uppdatera paustiderna */
function ie_compatible_eval(code) {
var dj_global = this; // global scope reference
if (window.execScript) {
window.execScript(code); // eval in global scope for IE
return null; // execScript doesn’t return anything
}
return dj_global.eval ? dj_global.eval(code) : eval(code); //eval för andra browsers
}
Servreside 是一个 symfony2 应用程序。