javascript - jquery fileupload plugin, how to cancel upload file process -


i want cancel click event of file upload if condition true, like

$('.fileupload').fileupload({     url: url,     datatype: 'json',     start: function (e, data) {         //how acheive this?         if(some condition 1){             alert('you can upload file';             //show file browser window , upload file normal         }         else{             alert('you cannot upload file');             //do not show file selection window , not upload file         }     } });

i using https://github.com/blueimp/jquery-file-upload/wiki/options


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