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ajax下的异步提交表单 file类型的input框无法被提交

马力 2021-03-17 17:26:31 【前端开发】 1910人已围观

简介ajax下的异步提交表单 file类型的input框无法被提交

#封装FormData 对象，直接用$.ajax提交

论坛上有人提及到FormData的封装方式，将form表单中的内容封装成formdata的数据格式 FormData 对象可以把form中所有表单元素的name与value组成一个queryString，提交到后台，在使用Ajax提交时，使用FormData对象可以减少拼接queryString的工作量。

FormData的使用方法也是非常简单，直接传入form表单对象即可，如下：

var form = $('#form1');  
	var formdata = new FormData(form);

使用这种方式将数据封装后，file类型的文件数据即可以键值对的方式封装在formdata中，然后用ajx提交，方法如下：

var form = $('#form-oOPpetRL');
        var formdata = new FormData(form);
        $.ajax({
            //ajax方式提交表单
            url:'/index.php/admin/systemAdminInit',
            type:'post',
            data:formdata,
            dataType:'json',
            success:function(data){
                data = JSON.parse(data)
                if(data['code'] == -100){
                    layer.msg(data['message'],{icon:2,time:1000},function () {
                        window.location.href = window.location.href
                    })
                }else if(data['code']==200){
                    layer.msg(data['message'],{icon:2,time:1000},function () {
                        window.location.href = "/index.php/admin";
                    })
                }
            },
		)};

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ajax下的异步提交表单 file类型的input框无法被提交

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