javascript获取url参数和script标签中获取url参数-优快云博客

本文详细介绍了如何通过JavaScript获取URL参数和脚本参数，并提供了具体代码示例，帮助开发者理解并应用这些技术。

url paramter：

 
         Code highlighting produced by Actipro CodeHighlighter (freeware)http:
         //www.CodeHighlighter.com/-->//lastest:
        
         var 
          queryStrings=
         function
         () {
         //get url querystring
        
         var 
          params=document.location.search,reg=/(?:^\?|&)(.*?)=(.*?)(?=&|$)/g,temp,args={};
        
         while
         ((temp=reg.exec(params))!=
         null
         ) args[temp[1]]=decodeURIComponent(temp[2]);
        
         return 
          args;
        
         };
        
         //只取一个：
        
         var 
          queryString=
         function
         (key){
        
         return 
          (document.location.search.match(
         new 
          RegExp(
         "(?:^\\?|&)"
         +key+
         "=(.*?)(?=&|$)"
         ))||[
         ''
         ,
         null
         ])[1];
        
         }
        
         var 
          args=getArgs();
        
         alert(args.name+
         " | "
         +args.sex+
         " | "
         +args.age);
        
         //测试链接：<a href="?name=abc&sex=男&age=12">test getQueryString</a>

script paramter:

 
         var 
          getScriptArgs=
         function
         (){
         //获取多个参数
        
         var 
          scripts=document.getElementsByTagName(
         "script"
         ),
        
         script=scripts[scripts.length-1],
         //因为当前dom加载时后面的script标签还未加载，所以最后一个就是当前的script
        
         src=script.src,
        
         reg=/(?:\?|&)(.*?)=(.*?)(?=&|$)/g,
        
         temp,res={};
        
         while
         ((temp=reg.exec(src))!=
         null
         ) res[temp[1]]=decodeURIComponent(temp[2]);
        
         return 
          res;
        
         };
        
         var 
          args=getScriptArgs();
        
         alert(args.a+
         " | "
         +args.b+
         " | "
         +args.c);
        
         //假如上面的js是在这个js1.js的脚本中<script type="text/javascript" src="js1.js?a=abc&b=汉字&c=123"></script>
        
         var 
          getScriptArg=
         function
         (key){
         //获取单个参数
        
         var 
          scripts=document.getElementsByTagName(
         "script"
         ),
        
         script=scripts[scripts.length-1],
        
         src=script.src;
        
         return 
          (src.match(
         new 
          RegExp(
         "(?:\\?|&)"
         +key+
         "=(.*?)(?=&|$)"
         ))||[
         ''
         ,
         null
         ])[1];
        
         };
        
         alert(getScriptArg(
         "c"
         ));