<iframe id="iframe1" name="ifra1" style="display: none"></iframe>
<form id="fm1" action="/app04/ajax1/" method="POST" target="ifra1" enctype="multipart/form-data">
<input type="text" name="k1"/>
<input type="text" name="k2"/>
<input type="file" name="k3"/>
<a style="background-color: red" onclick="AjaxSubmit8()">上传文件2</a>
</form> function AjaxSubmit8() {//第三种方式:iframe+form文件上传(经常用到) //提交之前绑定
document.getElementById('iframe1').onload=reload1;
document.getElementById('fm1').submit() }
function reload1() {
var content = this.contentWindow.document.body.innerHTML;//this代表iframe标签
var obj=JSON.parse(content);//转换成json对象
console.log(obj) }