jquery插件---模拟from表单上传文件,实现异步提交
jQuery.extend({ createUploadIframe: function (id, uri) { //create frame var frameId = ‘jUploadFrame‘ + id; var iframeHtml = ‘<iframe id="‘ + frameId + ‘" name="‘ + frameId + ‘" style="position:absolute; top:-9999px; left:-9999px"‘; if (window.ActiveXObject) { if (typeof uri == ‘boolean‘) { iframeHtml += ‘ src="‘ + ‘javascript:false‘ + ‘"‘; } else if (typeof uri == ‘string‘) { iframeHtml += ‘ src="‘ + uri + ‘"‘; } } iframeHtml += ‘ />‘; jQuery(iframeHtml).appendTo(document.body); return jQuery(‘#‘ + frameId).get(0); }, createUploadForm: function (id, fileElementId, data, fileElementId2) { //create form var formId = ‘jUploadForm‘ + id; var fileId = ‘jUploadFile‘ + id; var form = jQuery(‘<form action="" method="POST" name="‘ + formId + ‘" id="‘ + formId + ‘" enctype="multipart/form-data"></form>‘); if (data) { for (var i in data) { jQuery(‘<input type="hidden" name="‘ + i + ‘" value="‘ + data[i] + ‘" />‘).appendTo(form); } } var oldElement = jQuery(‘#‘ + fileElementId); var newElement = jQuery(oldElement).clone(); jQuery(oldElement).attr(‘id‘, fileId); jQuery(oldElement).before(newElement); jQuery(oldElement).appendTo(form); if (fileElementId2) { var oldElement2 = jQuery(‘#‘ + fileElementId2); var newElement2 = jQuery(oldElement2).clone(); jQuery(oldElement2).attr(‘id‘, fileId); jQuery(oldElement2).before(newElement); jQuery(oldElement2).appendTo(form); } //set attributes jQuery(form).css(‘position‘, ‘absolute‘); jQuery(form).css(‘top‘, ‘-1200px‘); jQuery(form).css(‘left‘, ‘-1200px‘); jQuery(form).appendTo(‘body‘); return form; }, ajaxFileUpload: function (s) { // TODO introduce global settings, allowing the client to modify them for all requests, not only timeout s = jQuery.extend({}, jQuery.ajaxSettings, s); var id = new Date().getTime(); var form; if (s.morethan) { form = jQuery.createUploadForm(id, s.fileElementId, (typeof (s.data) == ‘undefined‘ ? false : s.data), s.fileElementId2); } else { form = jQuery.createUploadForm(id, s.fileElementId, (typeof (s.data) == ‘undefined‘ ? false : s.data)); } var io = jQuery.createUploadIframe(id, s.secureuri); var frameId = ‘jUploadFrame‘ + id; var formId = ‘jUploadForm‘ + id; // Watch for a new set of requests if (s.global && !jQuery.active++) { jQuery.event.trigger("ajaxStart"); } var requestDone = false; // Create the request object var xml = {} if (s.global) jQuery.event.trigger("ajaxSend", [xml, s]); // Wait for a response to come back var uploadCallback = function (isTimeout) { var io = document.getElementById(frameId); try { if (io.contentWindow) { xml.responseText = io.contentWindow.document.body ? io.contentWindow.document.body.innerHTML : null; xml.responseXML = io.contentWindow.document.XMLDocument ? io.contentWindow.document.XMLDocument : io.contentWindow.document; } else if (io.contentDocument) { xml.responseText = io.contentDocument.document.body ? io.contentDocument.document.body.innerHTML : null; xml.responseXML = io.contentDocument.document.XMLDocument ? io.contentDocument.document.XMLDocument : io.contentDocument.document; } } catch (e) { jQuery.handleError(s, xml, null, e); } if (xml || isTimeout == "timeout") { requestDone = true; var status; try { status = isTimeout != "timeout" ? "success" : "error"; // Make sure that the request was successful or notmodified if (status != "error") { // process the data (runs the xml through httpData regardless of callback) var data = jQuery.uploadHttpData(xml, s.dataType); // If a local callback was specified, fire it and pass it the data if (s.success) s.success(data, status); // Fire the global callback if (s.global) jQuery.event.trigger("ajaxSuccess", [xml, s]); } else jQuery.handleError(s, xml, status); } catch (e) { status = "error"; jQuery.handleError(s, xml, status, e); } // The request was completed if (s.global) jQuery.event.trigger("ajaxComplete", [xml, s]); // Handle the global AJAX counter if (s.global && ! --jQuery.active) jQuery.event.trigger("ajaxStop"); // Process result if (s.complete) s.complete(xml, status); jQuery(io).unbind() setTimeout(function () { try { jQuery(io).remove(); jQuery(form).remove(); } catch (e) { jQuery.handleError(s, xml, null, e); } }, 100) xml = null } } // Timeout checker if (s.timeout > 0) { setTimeout(function () { // Check to see if the request is still happening if (!requestDone) uploadCallback("timeout"); }, s.timeout); } try { var form = jQuery(‘#‘ + formId); jQuery(form).attr(‘action‘, s.url); jQuery(form).attr(‘method‘, ‘POST‘); jQuery(form).attr(‘target‘, frameId); if (form.encoding) { jQuery(form).attr(‘encoding‘, ‘multipart/form-data‘); } else { jQuery(form).attr(‘enctype‘, ‘multipart/form-data‘); } jQuery(form).submit(); } catch (e) { jQuery.handleError(s, xml, null, e); } jQuery(‘#‘ + frameId).load(uploadCallback); return { abort: function () { } }; }, uploadHttpData: function (r, type) { var data = !type; data = type == "xml" || data ? r.responseXML : r.responseText; // If the type is "script", eval it in global context if (type == "script") jQuery.globalEval(data); // Get the JavaScript object, if JSON is used. if (type == "json") eval("data = " + data); // evaluate scripts within html if (type == "html") jQuery("<div>").html(data).evalScripts(); return data; } })
使用:
$.ajaxFileUpload({ url: ‘‘, secureuri: false, data: { LoginName: _LoginName,//用户名 MPSW: _MPSW,//密码 RePSW: _RePSW,//确认密码 MTel: _MTel,//手机 MName: _MName,//真实姓名 VCode: _VCode,//验证码 CName: _CName,//公司名称 LName: _LName,//法人 LPID: _LPID,//身份证号 CAddress: _CAddress,//公司地址 }, fileElementId: ‘file1‘,//上传file控件 fileElementId2: ‘file2‘,//上传file控件 morethan: true,//支持两张图片上传 dataType: ‘json‘,//返回值类型 success: function (data, status) { alert(‘处理代码!‘); }, error: function (data, status, e) { alert(‘发生错误‘); } });
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