js实现接收表单的值并将值拼在表单action后面的方法

<form id="myform" name="myform" method="post" action="http://www.yoursiteweb.com:8080/justsy/Dolet?type=ws_justsy_webclips_policy_update" enctype="multipart/form-data"> <!-- 后台生成json --> <script type="text/javascript"> var data = [{label:"基本信息",type:"title",tag:"h1"}, {label:"Name",type:"input",input:"text",optional:false,name:"policyName",id:"policyName",value:""}, {label:"Description",type:"input",input:"text",optional:false,name:"policyDescription",id:"policyDescription",value:""}, {label:"",type:"title",tag:"h1"}, {label:"Label(Required)",type:"input", input:"text", optional:true, name:"Label",id:"Label",value:""}, {label:"URL(Required)",type:"input", input:"text", optional:true, name:"URL",id:"URL",value:""}, {label:"Removeable",type:"input", input:"checkbox", optional:false,name:"IsRemovable",id:"IsRemovable",value:"",accept:"image/* "}, {label:"Icon",type:"input", input:"file", optional:true, name:"picurl",id:"IconFile",value:""}, {label:"Precomposed Icon",type:"input", input:"checkbox",optional:false,name:"Precomposed",id:"Precomposed",value:""}, {label:"Full screen",type:"input", input:"checkbox",optional:false,name:"FullScreen",id:"FullScreen",value:""}, {type:"hidden",name:"policyID",id:"policyID",value:""}, {type:"hidden",name:"PayloadDescription",id:"PayloadDescription",value:""}, {type:"hidden",name:"PayloadDisplayName",id:"PayloadDisplayName",value:""}, {type:"hidden",name:"PayloadIdentifier",id:"PayloadIdentifier",value:""}, {type:"hidden",name:"PayloadOrganization",id:"PayloadOrganization",value:""}, {type:"hidden",name:"PayloadType",id:"PayloadType",value:""}, {type:"hidden",name:"PayloadUUID",id:"PayloadUUID",value:""}, {type:"hidden",name:"PayloadVersion",id:"PayloadVersion",value:""}, //{type:"hidden",name:"Icon",id:"Icon",value:""}, {type:"submit",optional:true,func:""} ]; inputs(data);//在需要显示输入框的地方调用该方法 </script> <div class="btn-bar"> <input type="button" onClick="submitForm()" value="保存"> </div> </form>

function getParams() { var docList=document.getElementById("inputList").getElementsByTagName("input"); var str="";//alert(docList.length) ; for(var i=0;i<docList.length-1;i++) {     if(docList[i].getAttribute("type")=="checkbox"){     if(docList[i].checked)       str+=getParam(docList[i].getAttribute("name"),"1")     else       str+=getParam(docList[i].getAttribute("name"),"0")   }   else     str+=getParam(docList[i].getAttribute("name"),docList[i].value);} return str; } function getParam(key,value) {   return "&"+key+"="+value; } function submitForm(){   if(document.getElementById("policyID").value == "")  {    alert("该公司没有创建策略");    return false;   }   else{   document.getElementById("IconFile_error").innerHTML="正在提交……";  /*获取文件上传的文件名称并且判断扩展名是否为JPG*/   var testmsg=document.getElementById("IconFile").value;   var filename=testmsg.replace(/.*(//|//)/, "");   var fileExt=(/[.]/.exec(filename)) ? /[^.]+$/.exec(filename.toLowerCase()) : '';    if(fileExt!='jpg'){     document.getElementById("IconFile_error").innerHTML="";     alert("请上传图片");      return false;    }   document.getElementById("myform").action+=getParams();   document.getElementById("myform").submit();   } }