上传前显示效果上传后显示效果$('#img_purchase').on('click',function(){$('#purchase').click();});$('#img_sale').on('click',function(){$('#sale').click();});functiongetBase64(file,Callback){letreader=newFileReader()letimgResult=''reader.readAsDataURL(file)reader.onload=function(){imgResult=reader.result}reader.onerror=function(error){回调（错误）}reader.onloadend=function(){Callback(imgResult)}};$(document).on('change','#purchase',function(){varfilePath=$(this).val()console.log(filePath);vararr_prepath=this.files;console.log(arr_prepath);for(vari=0;i
