Ajax cross-domain (same basic domain name) form submission method

This article mainly introduces the method of ajax cross-domain (same basic domain name) form submission. The example analyzes the cross-domain form submission skills during the Ajax submission process. Friends in need can refer to the following

Examples of this article Describes the method of ajax cross-domain (same basic domain name) form submission. Share it with everyone for your reference. The details are as follows:

1. Add the following js statement to the page for ajax submission:

<script type="text/javascript"> 
  document.domain="基础域名"; 
</script>

2. When submitting the ajax form, you can use a jquery form plug-in jquery.form. js

The usage syntax is as follows:

//fromPost为要收集数据的form表单的id  
$("#formPost").ajaxSubmit({ 
  url:"跨域的业务处理地址", 
  cache:false, 
  dataType:"html", 
  iframe:true, 
  success:function (data){ 
 //返回如果是json可以这样处理一下，xml格式需要做其它的处理
 eval("data="+data); 
   if(data.flag == 'OK'){ 
   }
});

3. The return value of cross-domain business processing must contain the following statements

<script type="text/javascript">
  document.domain="基础域名";
</script>

4. The remaining return value can be json , xml format or other customized formats, as long as the client can parse the desired results

5. In this way, the return value after the cross-domain submission of the form can be obtained in the ajax submission page , after getting the return value, you can continue to do other processing

Instructions:

1. Basic domain name: the public part of two or more domain names, The public part must include at least the second-level domain name or the part above the second-level domain name

2.document.domain="basic domain name"; //This sentence is to make the domain names the same and lift cross-domain restrictions. For details, see: "Analysis of points to note when setting document.domain in js to achieve cross-domain implementation"

3. There are many other solutions to cross-domain submission, such as: "Detailed explanation of js same-origin policy"

The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

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