javascript - how to refer an external link from wordpress page -

i have created button , text field in wordpress page , when user add , clicked search go external link search.i tried , html , javescript follows thing if need add link https://the outside site/index.php?name_path=domains_path redirected in wordpress http://server/mywordpressfolder/?domainname=dyhrrty&name=.com gives 404 error how resolve this!

  
  
       function callgetdomain()       {           var res1=$("#domainname").val();          var res2=$("#name").val();          var name=res1+res2; if(res1!="domain name")  {                     location.href="https://www.google.lk/search?q=test"; }          else { alert("please specify domain name"); }      } 
  
   <div class="search_domaim">  <div class="title_text">   <h2>register domain</h2></div>  <div class="search_field">  <form action="" method="get">  <div class="search_input">  <input name="domainname" type="text" class="textbox" id="domainname" onfocus="if (value == 'domain name') {value =''}" onblur="if (value == '') {value = 'domain name'}" value="domain name"></div>  <div class="search_drop">  <select name="name" id="name">   <option value=".com">.com</option>   <option value=".in">.in</option>  </select>  </div>  <div class="search_btn">  <!--<input name="" type="image" src="images/domain_search_btn.png" />-->  <input type="submit" value="search" class="domain_submit" onclick="callgetdomain();">  </div>  <div class="clear"></div>  </form>  </div>  <div class="clear"></div>  </div>
  
 
 
  
i have done using oncick method 
  
heres fiddle
  
$(".domain_submit").on("click",function(){       var res1=$("#domainname").val();     var res2=$("#name").val();      var name=res1+res2; alert(name);     if(res1!="domain name") { window.open('https://www.google.lk/search?q=test','_blank'); }     else { alert("please specify domain name");          }  });