Javascript getQueryVariable问题和问题

这个脚本一直困扰着我，无论我做什么，它都会显示顶部的document.write行是错误的。在这一点上它失败了。我希望有人能帮助我 头

函数getQueryVariable（变量） { var query=window.location.search.substring（1）； var vars=query.split（&）； 对于（var i=0；i

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正确使用字符串组合（在单引号内使用双引号）：

document.write（'googletag.cmd.push（function（）{googletag.display（“div-gpt-ad-1403912225717-2”）；}）；）

颜色编码应使其清晰可见。您正在关闭您不想关闭的引号：

文档。写入（'谢谢，做了这些更改，但在我运行页面时仍显示在屏幕上；at'）文档。写入（''）}否则（getQueryVariable（“catid”）=“Automotive”）{
function getQueryVariable(variable)
{
   var query = window.location.search.substring(1);
   var vars = query.split("&");
   for (var i=0;i<vars.length;i++) {
           var pair = vars[i].split("=");
           if(pair[0] == variable){return pair[1];}
   }
   return(false);
}
</script>

<script type='text/javascript'>
<!--

if (getQueryVariable("catid")= "Merchandise") {
document.write('<div id='div-gpt-ad-1403912225717-2'><script type='text/javascript'>googletag.cmd.push(function() { googletag.display('div-gpt-ad-1403912225717-2'); });</script></div>')
document.write('<div id='div-gpt-ad-1403912225717-2'><script type='text/javascript'>googletag.cmd.push(function() { googletag.display('div-gpt-ad-1403912225717-3'); });</script></div>')
} else if (getQueryVariable("catid")= "Automotive") {
document.write('<div id='div-gpt-ad-1403912225717-2'><script type='text/javascript'>googletag.cmd.push(function() { googletag.display('div-gpt-ad-1403910107020-2'); });</script></div>')
document.write('<div id='div-gpt-ad-1403912225717-2'><script type='text/javascript'>googletag.cmd.push(function() { googletag.display('div-gpt-ad-1403910107020-3'); });</script></div>')
} else if (getQueryVariable("catid")= "Yard Sales") 
document.write('<div id='div-gpt-ad-1403912225717-2'><script type='text/javascript'>googletag.cmd.push(function() { googletag.display('div-gpt-ad-1403912225717-2'); });</script></div>')
document.write('<div id='div-gpt-ad-1403912225717-2'><script type='text/javascript'>googletag.cmd.push(function() { googletag.display('div-gpt-ad-1403912225717-3'); });</script></div>')
} else if (getQueryVariable("catid")= "Public Notices") {
document.write('<div id='div-gpt-ad-1403912225717-2'><script type='text/javascript'>googletag.cmd.push(function() { googletag.display('div-gpt-ad-1403910107020-2'); });</script></div>')
document.write('<div id='div-gpt-ad-1403912225717-2'><script type='text/javascript'>googletag.cmd.push(function() { googletag.display('div-gpt-ad-1403910107020-3'); });</script></div>')
} else if (getQueryVariable("catid")= "Services") {
document.write('<div id='div-gpt-ad-1403912225717-2'><script type='text/javascript'>googletag.cmd.push(function() { googletag.display('div-gpt-ad-1403910107020-2'); });</script></div>')
document.write('<div id='div-gpt-ad-1403912225717-2'><script type='text/javascript'>googletag.cmd.push(function() { googletag.display('div-gpt-ad-1403910107020-3'); });</script></div>')
} else if (getQueryVariable("catid")= "Real Estate for Sale") {
document.write('<div id='div-gpt-ad-1403912225717-2'><script type='text/javascript'>googletag.cmd.push(function() { googletag.display('div-gpt-ad-1403913003830-2'); });</script></div>')
document.write('<div id='div-gpt-ad-1403912225717-2'><script type='text/javascript'>googletag.cmd.push(function() { googletag.display('div-gpt-ad-1403913003830-3'); });</script></div>')
} else {
document.write('<div id='div-gpt-ad-1403912225717-2'><script type='text/javascript'>googletag.cmd.push(function() { googletag.display('div-gpt-ad-1403911366201-2'); });</script></div>')
document.write('<div id='div-gpt-ad-1403912225717-2'><script type='text/javascript'>googletag.cmd.push(function() { googletag.display('div-gpt-ad-1403911366201-3'); });</script></div>')
}
//-->
</script>

document.write('<div id="div-gpt-ad-1403912225717-2"><script type="text/javascript">googletag.cmd.push(function() { googletag.display("div-gpt-ad-1403912225717-2"); });</script></div>')