Javascript 仅适用于带警报的 Safari
我是 javascript 的新手,在让我的脚本在 Safari 中运行时遇到问题。我已经进行了大量的谷歌搜索来寻找解决方案,但没有找到任何有效的方法。
我有一个 HTML 页面,它使用 javascript 从两个单独的数组加载 swf 和标题。有一个“下一个”按钮,单击后将加载另一个 SWF 和新的标题。它在 IE 和 Firefox 中完美运行,但在 Safari 中,新的 SWF 无法显示。在 Safari 调试器中,它显示正确的新 SWF 文件名,但在屏幕上显示原始 SWF。我让它工作的唯一方法是在代码后面有一个警报。我尝试调整函数中的事件顺序,但这并没有解决任何问题。
有什么想法吗? (如果我提供了太多代码,我很抱歉,我只想向您提供完整的图片。)
Javascript(位于标题中):
var swfFrame=new Array();
swfFrame[0]='frame_01.swf';
swfFrame[1]='frame_02.swf';
swfFrame[2]='frame_03.swf';
var paragraphTxt=new Array();
paragraphTxt[0]='caption 1';
paragraphTxt[1]='caption 2';
paragraphTxt[2]='caption 3';
function nextFrame(x){
i = i+x;
if(i>=swfFrame.length){
i=i-1;
window.open('quiz.html');
}else{
document.getElementById("framenum").innerHTML = (i+1) + " of " + swfFrame.length;
document.getElementById("paragraph").innerHTML = paragraphTxt[i];
// IE
document.getElementById("flashPlayer").movie = "swf/" + swfFrame[i];
// FIREFOX et al
<!--[if !IE]>-->
document.getElementById("flashPlayer").data = "swf/" + swfFrame[i];
<!--[endif}-->
// ALERT (doesn't work in Safari if alert is off)
alert(document.getElementById("flashPlayer").data);
}
if(i>0){
document.getElementById("button_Bck").style.visibility = "visible";
}else{
hideBack();
}
}
function hideBack(){
document.getElementById("button_Bck").style.visibility = "hidden";
}
用于前进到下一个 swf 的按钮代码:
<a href="javascript://" onclick="nextFrame(1)"><div id="button_Nxt"><div id="buttonText">Next</div></div></a>
I am a newbie to javascript and am having trouble getting my script to work in Safari. I have done numerous google searches to find a solution, but haven't found anything that worked.
I have an HTML page that uses javascript to load an swf and a caption from two separate arrays. There is a next button that will load another SWF and a new caption upon being clicked. It works perfectly in IE and Firefox, but in Safari the new SWF does not display. In the Safari debugger it shows the correct new SWF file name, but displays the original SWF on screen. The only way I have gotten it to work is if I have an alert after the code. I have tried adjusting the order of events in my function, but that has not solved anything.
Any ideas? (I apologize if I've provided too much code, I just want to give you the full picture.)
Javascript (located in the header):
var swfFrame=new Array();
swfFrame[0]='frame_01.swf';
swfFrame[1]='frame_02.swf';
swfFrame[2]='frame_03.swf';
var paragraphTxt=new Array();
paragraphTxt[0]='caption 1';
paragraphTxt[1]='caption 2';
paragraphTxt[2]='caption 3';
function nextFrame(x){
i = i+x;
if(i>=swfFrame.length){
i=i-1;
window.open('quiz.html');
}else{
document.getElementById("framenum").innerHTML = (i+1) + " of " + swfFrame.length;
document.getElementById("paragraph").innerHTML = paragraphTxt[i];
// IE
document.getElementById("flashPlayer").movie = "swf/" + swfFrame[i];
// FIREFOX et al
<!--[if !IE]>-->
document.getElementById("flashPlayer").data = "swf/" + swfFrame[i];
<!--[endif}-->
// ALERT (doesn't work in Safari if alert is off)
alert(document.getElementById("flashPlayer").data);
}
if(i>0){
document.getElementById("button_Bck").style.visibility = "visible";
}else{
hideBack();
}
}
function hideBack(){
document.getElementById("button_Bck").style.visibility = "hidden";
}
Code for button used to advance to the next swf:
<a href="javascript://" onclick="nextFrame(1)"><div id="button_Nxt"><div id="buttonText">Next</div></div></a>
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@rlane423:我认为您实际上不能在脚本块中使用像这样的条件注释。
尝试 -
@rlane423: I don't think you can actually use conditional comments like that within a script block.
Try --
我认为你的问题是由于 flash 在与 javascript 不同的线程中运行。当您使用警报进行调试并且您的页面包含 Flash 时,您可能会遇到这些类型的 heisenbug。如果没有 Flash,页面上的所有内容(包括 JavaScript)都会在警报期间被阻止。另一方面,Flash 在单独的线程上运行,并且不会因警报而阻塞。
这个例子说明了我正在谈论的内容:
开始播放电影,然后单击链接 - 当警报响起时,视频不会停止播放。
最简单的解决办法可能是将警报语句后面的代码包装在 setTimeout 函数中,并有短暂的延迟:
更好的解决办法是向 Flash 影片注册一个事件或轮询它,直到它准备好更新为止。
I think your problem is due to the fact that flash runs in a separate thread from javascript. When you use an alert for debugging and your page includes flash you can run into these sorts of heisenbugs. In the absence of flash, everything on your page, including javascript, will block during an alert. Flash on the other hand runs on a separate thread and does not block for alerts.
This example illustrates what I am talking about:
Start the movie and then click the link - the video will not stop playing while the alert is up.
The easiest fix for this is probably to wrap the code after the alert statement in a setTimeout function with a short delay:
A better fix would be to register an event with the flash movie or poll it until it's ready to be updated.
你的 i 数组索引实际上达到了第三个索引吗?
如果您每次调用函数 nextFrame(1)...每次调用该函数时您是否只将数字 1 传递到该函数中,或者您是否使用
nextFrame(1) 进行了 3 个不同的函数调用
下一帧(2)
nextFrame(3)
另外,您还没有像 var i = 0; 那样声明 i我会这样做......出于这些目的,如果您将 i 声明为 nextFrame 函数之外的全局变量,然后每次调用 nextframe() 函数时将其增加 1,那么您的代码会轻很多。然后根据全局i加载你想要的电影。
然后调用该函数
Is your array index of i actually making it to the third index?
If you are calling your function nextFrame(1) each time... are you only passing the number 1 into the function each time you call the function or do you have 3 different function calls with
nextFrame(1)
nextFrame(2)
nextFrame(3)
also, you have not declared i as in var i = 0; I would do this ... for these purposes your code would be a lot lighter if you were to declare i as global outside of your nextFrame function and then increment it by 1 every time the nextframe() function is called. And then load in the movie you want based on the global i.
then call the function with
我想出了一个可行的解决方案。这可能是一个完整的黑客,但它可以在我需要的所有浏览器中运行。
首先,按照 @stealthyninja 的建议,我改变了检测 IE 的方式。然后我决定尝试完全重新加载 Flash,而不是仅仅交换 swf 的文件名。第一个 Flash 正在使用 swfobject.js 动态发布方法加载。所以我以同样的方式重新加载后续帧。我想为此使用innerHTML,但它不喜欢我尝试将javascript放入其中。因此,我在 Flash 内容的 div 中添加了一个空的 javascript 块,并使用 innerHTML 加载其中的 swfobject 调用。 (希望这是有道理的,并且不是完全倒退的做法。)代码如下。
带有新添加的 javascript 块的 Flash 内容的 Div 位置:
I came up with a solution that works. It may be a complete hack, but it's working in all the browsers I need it to.
First I changed the way I was detecting IE, as suggested by @stealthyninja. Then I decided to try entirely reloading the flash instead of just swapping the file name of the swf. The first flash is being loaded using the swfobject.js dynamic publishing method. So I am reloading the subsequent frames the same way. I wanted to use innerHTML for this, but it didn't like me trying to put javascript in it. So I added an empty javascript block within the div of the flash content and used innerHTML to load the swfobject call within that. (Hopefully this makes sense and isn't a totally backwards way of doing it.) Code is below.
Div location of Flash content with newly added javascript block: