使用inner.html
[英]use of inner.html
问题描述
Apologies for the strange format of this question. 
对这个问题的奇怪格式表示歉意。 I've asked a couple of similar questions recently and am still at a loss. 我最近问了几个类似的问题，但仍然不知所措。 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. 我真的不知道大部分是如何工作的，我一直在尝试在W3Schools.com这样的地方学习各种教程，并且在这里的人的帮助下，虽然我不完全理解，但我认为我快到了。
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). 我想要做的只是播放一段视频，如果这是第一次访问者到达网站（但它有点特别 - 它是透明的，需要漂浮在页面上）。
The code below correctly sets a cookie if one doesn't exist, and checks for it on the user visiting the site. 如果一个cookie不存在，下面的代码会正确设置一个cookie，并在访问该站点的用户上检查它。 The bit I have a problem with is the syntax of the line that starts: 我遇到问题的是该行的语法：
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. 如果我评论该行，所有其他cookie的东西工作正常，所以我希望有人可以提供帮助。 the errors that the firefox error console gives are: unexpected end of xml source and checkCookie is not defined firefox错误控制台给出的错误是：xml源的意外结束和checkCookie未定义
I also tried throwing quotes around the whole lot, but it made no real difference. 我也试过在整个地方投掷报价，但没有真正的区别。
Here is the code, and thank you all in advance. 这是代码，并提前感谢大家。 Rob. 抢。
<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.macromedia.com/go/getflashplayer','wmode','transparent','movie','HTIFLVPlayer')</script>;
}
}
}
</script>
<body onload="checkCookie()">
</body>
2 个解决方案
解决方案1
1 2011-09-25 23:26:49
Aren't you missing a few quotation marks there? 你不是错过了几个引号吗？
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>";
解决方案2
1 2011-09-25 23:33:45
A couple of things that may or may not lead you the answer: 一些可能会或可能不会引导您答案的事情：
Check that the returned value from getElementById is not null before trying to use it, eg: 在尝试使用之前检查getElementById的返回值是否为null，例如：
var el = document.getElementById('video')
if (el) {
el.innerHTML = ...
}
Setting a script element as the innerHTML of an element will not execute the script. 将script元素设置为元素的innerHTML将不会执行脚本。
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, eg 最好的方法是将脚本放入一个单独的文件中，并使用script元素的src属性加载它，例如
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: 或者，您可以将脚本设置为脚本元素的.text属性，但这在某些浏览器中不起作用：
script.text = '...';
el.appendChild(script);
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.