---------------------formData上传图片---------------------
<form id="imageform">
<img src="img/user_logo_center.png" class="user_logo"/>
<i class="change_pho"></i>
<input type="file" name="photo" accept="image/png,image/gif,image/jpg,image/jpeg" id="change_pho_btn">
<form>
$("#change_pho_btn").on("change",function(){
var formData = new FormData($( "#imageform" )[0]);
formData.append("type", "avatar");
$.ajax({
url: '',
type: 'POST',
data: formData,
async: false,
cache: false,
contentType: false,
processData: false,
success: function (data) {
$('#imageform .user_logo').attr('src',data.img_url);
},
error:function(){
}
});
})
----------------------获取客户端图片链接--------------------------------
---》必须为文件对象或者BLOB对象（2进制对象）
var img_url=window.URL.createObjectURL($("#upload_pic").get(0).files[0])
$("img").attr("src",img_url)
