use of inner.html
Apologies for the strange format of this question. I've asked a couple of similar questions recently and am still at a loss. I REALLY don't know how most of this works, and I've been trying to follow various tutorials etc. on places like W3Schools.com, and with the help of people here, and although I don't fully understand, I think I'm almost there.
What I'm trying to do is ONLY play a piece of video if it's the first time a visitor has arrived at the site (but it's a bit special - it's transparent, and needs to float on the page).
The code below correctly sets a cookie if one doesn't exist, and checks for it on the user visiting the site. The bit I have a problem with is the syntax of the line that starts:
document.getElementById('video').innerHTML =
If I comment that line out, all the other cookie stuff works fine, so I'm hoping that someone can help. the errors that the firefox error console gives are: unexpected end of xml source and checkCookie is not defined
I also tried throwing quotes around the whole lot, but it made no real difference.
Here is the code, and thank you all in advance. Rob.
<div id="video" style="position:absolute;top:125px;left:-67px;z-index:10000000"> </div>
<script src="AC_RunActiveContent.js" type="text/javascript"> </script>
<script type="text/javascript">
function getCookie(c_name)
{
var i,x,y,ARRcookies=document.cookie.split(";");
for (i=0;i<ARRcookies.length;i++)
{
x = ARRcookies[i].substr(0,ARRcookies[i].indexOf("="));
y = ARRcookies[i].substr(ARRcookies[i].indexOf("=")+1);
x = x.replace(/^\s+|\s+$/g,"");
if (x==c_name)
{
return unescape(y);
}
}
}
function setCookie(c_name,value,exdays)
{
var exdate = new Date();
exdate.setDate(exdate.getDate() + exdays);
var c_value = escape(value) + ((exdays == null) ? "" : "; expires="+exdate.toUTCString());
document.cookie=c_name + "=" + c_value;
}
function checkCookie()
{
var username=getCookie("username");
if (username!=null && username!="")
{
alert("Welcome again " + username);
}
else
{
username=prompt("Please enter your name:","");
if (username!=null && username!="")
{
setCookie("username",username,7);
document.getElementById('video').innerHTML = <script type="text/javascript"> AC_FL_RunContent ('codebase','http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0','width','320','height','220','id','HTIFLVPlayer','src','HTIFLVPlayer','flashvars','&MM_ComponentVersion=1&skinName=HTI_Skin&streamName=nigel&autoPlay=true&autoRewind=true','quality','high','scale','noscale','name','HTIFLVPlayer','salign','lt','pluginspage','http://www.macromedi开发者_运维技巧a.com/go/getflashplayer','wmode','transparent','movie','HTIFLVPlayer')</script>;
}
}
}
</script>
<body onload="checkCookie()">
</body>
Aren't you missing a few quotation marks there?
document.getElementById('video').innerHTML = <script type="text/javascript"> AC_FL_RunContent ('codebase','http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0','width','320','height','220','id','HTIFLVPlayer','src','HTIFLVPlayer','flashvars','&MM_ComponentVersion=1&skinName=HTI_Skin&streamName=nigel&autoPlay=true&autoRewind=true','quality','high','scale','noscale','name','HTIFLVPlayer','salign','lt','pluginspage','http://www.macromedia.com/go/getflashplayer','wmode','transparent','movie','HTIFLVPlayer')</script>;
vs
document.getElementById('video').innerHTML = "<script type='text/javascript'> AC_FL_RunContent ('codebase','http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0','width','320','height','220','id','HTIFLVPlayer','src','HTIFLVPlayer','flashvars','&MM_ComponentVersion=1&skinName=HTI_Skin&streamName=nigel&autoPlay=true&autoRewind=true','quality','high','scale','noscale','name','HTIFLVPlayer','salign','lt','pluginspage','http://www.macromedia.com/go/getflashplayer','wmode','transparent','movie','HTIFLVPlayer')</script>";
A couple of things that may or may not lead you the answer:
Check that the returned value from getElementById is not null before trying to use it, e.g.:
var el = document.getElementById('video')
if (el) {
el.innerHTML = ...
}
Setting a script element as the innerHTML of an element will not execute the script.
The best way to do that is to put the script into a separate file and load it using the src property of the script element, e.g.
var script = document.createElement('script');
script.src = 'videoScript.js'; // or whatever you call the script file
el.appendChild(script);
Alternatively, you can set the script as the script element's .text property, but that will not work in some browsers:
script.text = '...';
el.appendChild(script);
加载中,请稍侯......
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