FormData对象提交表单和form提交表单

FormData

这是HTML5 中新增的API 

优点:FormData不仅能读取表单数据,也能自行追加数据

上代码:

js

 function fsubmit() {
        var form=document.getElementById("form1");
        var fd =new FormData(form);
        $.ajax({
             url: "server.php",
             type: "POST",
             data: fd,
             processData: false,  // 告诉jQuery不要去处理发送的数据
             contentType: false,   // 告诉jQuery不要去设置Content-Type请求头
             success: function(response,status,xhr){
                console.log(xhr);
                var json=$.parseJSON(response);
             }
        });
        return false;
    }

html

1 <form name="form1" id="form1">  
2         <p>name:<input type="text" name="name" /></p>  
3         <p>gender:<input type="radio" name="gender" value="1" />male <input type="radio" name="gender" value="2" />female</p>
4         <p>stu-number:<input type="text" name="number" /></p>  
5         <p>photo:<input type="file" name="photo" id="photo"></p>  
6         <p><input type="button" name="b1" value="submit" onclick="fsubmit()" /></p>  
7 </form>  

Form

js

 1 function checkUser(){
 2   var result = document.getElementById("userid").value;
 3   var password = document.getElementById("userpassid").value;
 4   if(result == "" ){
 5     alert("用户名不能为空");
 6     return false;
 7   }
 8   if(password == "" ){
 9     alert("密码不能为空");
10     return false;
11   }else{
12     return true;
13   }
14 }

html

1 <form id="formid" name="myform" method='post' onsubmit="return checkUser();" >
2   <input type="text" value="" class="text2" name="username" id="userid"/></td>
3   <input type="password" value="" class="text2" name="userpass" id="userpassid"/></td>
4   <input type="submit" value="" class="btn2" />
5 </form>

方法二

js

 1 function checkUser(){
 2   var result = document.getElementById("userid").value;
 3   var password = document.getElementById("passid").value;
 4 
 5   if(!result){
 6     alert("用户名不能为空");
 7     return false;
 8   }
 9   if(!password){
10     alert("密码不能为空");
11     return false;
12   }
13   document.getElementById("formid").submit();
14 }

html

1 <form id="formid" name="myform" method='post'>
2   <input type="text" value="" class="text2" name="username" id="userid"/></td>
3   <input type="password" value="" class="text2" name="userpass" id="userpassid"/></td>
4   <input type="button" value="" class="btn2" onclick="checkUser();" />
5 </form>

参考出处:

作者:zqifa

出处:http://www.cnblogs.com/zqifa/

 

posted @ 2018-02-10 16:45  chwl  阅读(9780)  评论(0编辑  收藏  举报