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March 29, 2021 12:30
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Save greenyleaf/ba91c1b1b90b37e00b645f199e2ced6b to your computer and use it in GitHub Desktop.
Upload files using ajax. Using FormData only if there are file fields in the form, to reduce the upload size when not needed.
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| $.ajax('http://custom.sdrkyj.top/form-action-url', { | |
| contentType: hasFiles ? false : undefined, | |
| data: hasFiles ? new FormData(formDom) : $(formDom).serialize(), | |
| method: 'post',// 'patch' | |
| dataType: 'json', | |
| processData: !hasFiles, | |
| xhr: function () { | |
| let xhr = $.ajaxSettings.xhr(); | |
| hasFiles && xhr.upload.addEventListener('progress', function (e) { | |
| if (e.lengthComputable && e.total > 1 << 17) { | |
| const percentage = Math.round((e.loaded * 100) / e.total) + '%'; | |
| // show upload progress, use `percentage` variable | |
| } | |
| }); | |
| return xhr; | |
| }, | |
| success: function (data, textStatus, jqXHR) { | |
| $(formDom).find('input[type=file]').val(''); // clear file form fields | |
| }, | |
| complete: function (jqXHR, textStatus, errorThrown) { | |
| //show upload complete | |
| } | |
| }); |
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