//判断图片大小和后缀 两张身份证照片大小
```javascript
$(".js_upFile").on("change",function(){
//判断图片大小和后缀 两张身份证照片大小
var val_ = $(this).val();
var file_ = this.files;
console.log(file_);
var size_ = file_[0].size;
console.log(size_);
var size_M = size_ / (1024 * 1024); //换成M单位，
console.log(size_M);
var newVal_ = val_.split(".");
console.log(newVal_);
var reg_suffix = /^(jpg|png)$/; //后缀限制
var maxSize_ = 2; //最大2M
if(val_==''||!reg_suffix.test(newVal_[newVal_.length-1])||size_M > maxSize_) {
alert("请选择后缀为png,jpg,大小不超过2M的文件！");
$(".js_upFile").val("");
return false;
}
});
var width_ = $(".show_picsize ").width();
var height_ = $(".show_picsize ").height();
console.log(width_);
if(width_<200||height_<200){
alert("请上传至少200*200的图片！");
$("#upload-file").val("");
return false;
}
$("form").ajaxSubmit({
type: "POST",
url: "/investManage/user/saveHeadIcon.do",
dataType:'json',
enctype: 'multipart/form-data',
success: function(obj){
console.log(obj);
if(obj.login&&obj.status==1){
alert("上传成功");
}else if(obj.login == false){
alert(obj.msg);
window.location.href = "login.html";
}else{
alert(obj.msg);
}
}
});
```