私はJqueryとajaxを初めて使用します。
複数の画像をサーバーフォルダにアップロードし、詳細をデータベーステーブルに保存する必要があります。アップロード後、データベースで「アクティブ」に設定されているすべての画像を表示する必要があります（私は自分のために機能していない多くのコードを調べました）
その後、いくつかの画像をある領域にドラッグし、ドラッグした画像の情報を別のテーブルに保存する必要があります。
誰かアイデアがありますか？助けてください？
ありがとう
質問する
5816 次
3 に答える
1
現在、Dropzone.jsは、ドラッグアンドドロップを使用して複数の画像をアップロードするのに最適なjsプラグインです。
オフィシャルサイト。https://www.dropzonejs.com/
デモの完全な例はここにあります。
于 2019-10-30T00:50:37.080 に答える
0
複数の画像をアップロードするには、このスクリプトを使用できます。単一の参照ボタンを使用して、複数の画像をアップロードできます
$(function(){
var btnUpload=$('#photo_0'); // id of browse button
new AjaxUpload(btnUpload, {
action: 'url_to_upload_function',
name: 'uploadfile',
onSubmit: function(file, ext){
if (! (ext && /^(jpg|png|jpeg|gif|JPG|PNG|GIF|JPEG)$/.test(ext))){
$("#photo_div1").html('Only JPG,PNG,GIF files are allowed'); //
return false;
}
var path="<?=base_url()?>images/wait.gif"; //losding image
$("#photo_div1").html("<img src="+path+" width='32' height='32' style='border:#b6b6b6 solid 1px;'>");
},
onComplete: function(file, response){
response = jQuery.trim(response);
if(response=="error")
{
$("#photo_error").css("display","block");
$("#upload_photo1").html("");
}
else if(response!="error")
{
$("#photo_error").css("display","none");
$("#photo_div1").html("");
var path="uploads/"+response; //echo the image name from the upload function
var img="<table><tr><td ><img src="+path+" style='border:#b6b6b6 solid 1px;'></td></tr></table>";
$("#img_div1").html(img);// display the image in a div it will display only one image. If you want to add more you can code according to that by using append or something like that
$("#upload_photo1").val(response);
$("#photo_hid1").val(response);
} else
{
alert("error");
}
}
});
});
このファイルもajaxupload.jsに含める必要があります
/**
* Ajax upload
* Project page - http://valums.com/ajax-upload/
* Copyright (c) 2008 Andris Valums, http://valums.com
* Licensed under the MIT license (http://valums.com/mit-license/)
* Version 3.5 (23.06.2009)
*/
/**
* Changes from the previous version:
* 1. Added better JSON handling that allows to use 'application/javascript' as a response
* 2. Added demo for usage with jQuery UI dialog
* 3. Fixed IE "mixed content" issue when used with secure connections
*
* For the full changelog please visit:
* http://valums.com/ajax-upload-changelog/
*/
(function(){
var d = document, w = window;
/**
* Get element by id
*/
function get(element){
if (typeof element == "string")
element = d.getElementById(element);
return element;
}
/**
* Attaches event to a dom element
*/
function addEvent(el, type, fn){
if (w.addEventListener){
el.addEventListener(type, fn, false);
} else if (w.attachEvent){
var f = function(){
fn.call(el, w.event);
};
el.attachEvent('on' + type, f)
}
}
/**
* Creates and returns element from html chunk
*/
var toElement = function(){
var div = d.createElement('div');
return function(html){
div.innerHTML = html;
var el = div.childNodes[0];
div.removeChild(el);
return el;
}
}();
function hasClass(ele,cls){
return ele.className.match(new RegExp('(\\s|^)'+cls+'(\\s|$)'));
}
function addClass(ele,cls) {
if (!hasClass(ele,cls)) ele.className += " "+cls;
}
function removeClass(ele,cls) {
var reg = new RegExp('(\\s|^)'+cls+'(\\s|$)');
ele.className=ele.className.replace(reg,' ');
}
// getOffset function copied from jQuery lib (http://jquery.com/)
if (document.documentElement["getBoundingClientRect"]){
// Get Offset using getBoundingClientRect
// http://ejohn.org/blog/getboundingclientrect-is-awesome/
var getOffset = function(el){
var box = el.getBoundingClientRect(),
doc = el.ownerDocument,
body = doc.body,
docElem = doc.documentElement,
// for ie
clientTop = docElem.clientTop || body.clientTop || 0,
clientLeft = docElem.clientLeft || body.clientLeft || 0,
// In Internet Explorer 7 getBoundingClientRect property is treated as physical,
// while others are logical. Make all logical, like in IE8.
zoom = 1;
if (body.getBoundingClientRect) {
var bound = body.getBoundingClientRect();
zoom = (bound.right - bound.left)/body.clientWidth;
}
if (zoom > 1){
clientTop = 0;
clientLeft = 0;
}
var top = box.top/zoom + (window.pageYOffset || docElem && docElem.scrollTop/zoom || body.scrollTop/zoom) - clientTop,
left = box.left/zoom + (window.pageXOffset|| docElem && docElem.scrollLeft/zoom || body.scrollLeft/zoom) - clientLeft;
return {
top: top,
left: left
};
}
} else {
// Get offset adding all offsets
var getOffset = function(el){
if (w.jQuery){
return jQuery(el).offset();
}
var top = 0, left = 0;
do {
top += el.offsetTop || 0;
left += el.offsetLeft || 0;
}
while (el = el.offsetParent);
return {
left: left,
top: top
};
}
}
function getBox(el){
var left, right, top, bottom;
var offset = getOffset(el);
left = offset.left;
top = offset.top;
right = left + el.offsetWidth;
bottom = top + el.offsetHeight;
return {
left: left,
right: right,
top: top,
bottom: bottom
};
}
/**
* Crossbrowser mouse coordinates
*/
function getMouseCoords(e){
// pageX/Y is not supported in IE
// http://www.quirksmode.org/dom/w3c_cssom.html
if (!e.pageX && e.clientX){
// In Internet Explorer 7 some properties (mouse coordinates) are treated as physical,
// while others are logical (offset).
var zoom = 1;
var body = document.body;
if (body.getBoundingClientRect) {
var bound = body.getBoundingClientRect();
zoom = (bound.right - bound.left)/body.clientWidth;
}
return {
x: e.clientX / zoom + d.body.scrollLeft + d.documentElement.scrollLeft,
y: e.clientY / zoom + d.body.scrollTop + d.documentElement.scrollTop
};
}
return {
x: e.pageX,
y: e.pageY
};
}
/**
* Function generates unique id
*/
var getUID = function(){
var id = 0;
return function(){
return 'ValumsAjaxUpload' + id++;
}
}();
function fileFromPath(file){
return file.replace(/.*(\/|\\)/, "");
}
function getExt(file){
return (/[.]/.exec(file)) ? /[^.]+$/.exec(file.toLowerCase()) : '';
}
// Please use AjaxUpload , Ajax_upload will be removed in the next version
Ajax_upload = AjaxUpload = function(button, options){
if (button.jquery){
// jquery object was passed
button = button[0];
} else if (typeof button == "string" && /^#.*/.test(button)){
button = button.slice(1);
}
button = get(button);
this._input = null;
this._button = button;
this._disabled = false;
this._submitting = false;
// Variable changes to true if the button was clicked
// 3 seconds ago (requred to fix Safari on Mac error)
this._justClicked = false;
this._parentDialog = d.body;
if (window.jQuery && jQuery.ui && jQuery.ui.dialog){
var parentDialog = jQuery(this._button).parents('.ui-dialog');
if (parentDialog.length){
this._parentDialog = parentDialog[0];
}
}
this._settings = {
// Location of the server-side upload script
action: 'upload.php',
// File upload name
name: 'userfile',
// Additional data to send
data: {},
// Submit file as soon as it's selected
autoSubmit: true,
// The type of data that you're expecting back from the server.
// Html and xml are detected automatically.
// Only useful when you are using json data as a response.
// Set to "json" in that case.
responseType: false,
// When user selects a file, useful with autoSubmit disabled
onChange: function(file, extension){},
// Callback to fire before file is uploaded
// You can return false to cancel upload
onSubmit: function(file, extension){},
// Fired when file upload is completed
// WARNING! DO NOT USE "FALSE" STRING AS A RESPONSE!
onComplete: function(file, response) {}
};
// Merge the users options with our defaults
for (var i in options) {
this._settings[i] = options[i];
}
this._createInput();
this._rerouteClicks();
}
// assigning methods to our class
AjaxUpload.prototype = {
setData : function(data){
this._settings.data = data;
},
disable : function(){
this._disabled = true;
},
enable : function(){
this._disabled = false;
},
// removes ajaxupload
destroy : function(){
if(this._input){
if(this._input.parentNode){
this._input.parentNode.removeChild(this._input);
}
this._input = null;
}
},
/**
* Creates invisible file input above the button
*/
_createInput : function(){
var self = this;
var input = d.createElement("input");
input.setAttribute('type', 'file');
input.setAttribute('name', this._settings.name);
var styles = {
'position' : 'absolute'
,'margin': '-5px 0 0 -175px'
,'padding': 0
,'width': '220px'
,'height': '30px'
,'fontSize': '14px'
,'opacity': 0
,'cursor': 'pointer'
,'display' : 'none'
,'zIndex' : 2147483583 //Max zIndex supported by Opera 9.0-9.2x
// Strange, I expected 2147483647
};
for (var i in styles){
input.style[i] = styles[i];
}
// Make sure that element opacity exists
// (IE uses filter instead)
if ( ! (input.style.opacity === "0")){
input.style.filter = "alpha(opacity=0)";
}
this._parentDialog.appendChild(input);
addEvent(input, 'change', function(){
// get filename from input
var file = fileFromPath(this.value);
if(self._settings.onChange.call(self, file, getExt(file)) == false ){
return;
}
// Submit form when value is changed
if (self._settings.autoSubmit){
self.submit();
}
});
// Fixing problem with Safari
// The problem is that if you leave input before the file select dialog opens
// it does not upload the file.
// As dialog opens slowly (it is a sheet dialog which takes some time to open)
// there is some time while you can leave the button.
// So we should not change display to none immediately
addEvent(input, 'click', function(){
self.justClicked = true;
setTimeout(function(){
// we will wait 3 seconds for dialog to open
self.justClicked = false;
}, 3000);
});
this._input = input;
},
_rerouteClicks : function (){
var self = this;
// IE displays 'access denied' error when using this method
// other browsers just ignore click()
// addEvent(this._button, 'click', function(e){
// self._input.click();
// });
var box, dialogOffset = {top:0, left:0}, over = false;
addEvent(self._button, 'mouseover', function(e){
if (!self._input || over) return;
over = true;
box = getBox(self._button);
if (self._parentDialog != d.body){
dialogOffset = getOffset(self._parentDialog);
}
});
// we can't use mouseout on the button,
// because invisible input is over it
addEvent(document, 'mousemove', function(e){
var input = self._input;
if (!input || !over) return;
if (self._disabled){
removeClass(self._button, 'hover');
input.style.display = 'none';
return;
}
var c = getMouseCoords(e);
if ((c.x >= box.left) && (c.x <= box.right) &&
(c.y >= box.top) && (c.y <= box.bottom)){
input.style.top = c.y - dialogOffset.top + 'px';
input.style.left = c.x - dialogOffset.left + 'px';
input.style.display = 'block';
addClass(self._button, 'hover');
} else {
// mouse left the button
over = false;
if (!self.justClicked){
input.style.display = 'none';
}
removeClass(self._button, 'hover');
}
});
},
/**
* Creates iframe with unique name
*/
_createIframe : function(){
// unique name
// We cannot use getTime, because it sometimes return
// same value in safari :(
var id = getUID();
// Remove ie6 "This page contains both secure and nonsecure items" prompt
// http://tinyurl.com/77w9wh
var iframe = toElement('<iframe src="javascript:false;" name="' + id + '" />');
iframe.id = id;
iframe.style.display = 'none';
d.body.appendChild(iframe);
return iframe;
},
/**
* Upload file without refreshing the page
*/
submit : function(){
var self = this, settings = this._settings;
if (this._input.value === ''){
// there is no file
return;
}
// get filename from input
var file = fileFromPath(this._input.value);
// execute user event
if (! (settings.onSubmit.call(this, file, getExt(file)) == false)) {
// Create new iframe for this submission
var iframe = this._createIframe();
// Do not submit if user function returns false
var form = this._createForm(iframe);
form.appendChild(this._input);
form.submit();
d.body.removeChild(form);
form = null;
this._input = null;
// create new input
this._createInput();
var toDeleteFlag = false;
addEvent(iframe, 'load', function(e){
if (// For Safari
iframe.src == "javascript:'%3Chtml%3E%3C/html%3E';" ||
// For FF, IE
iframe.src == "javascript:'<html></html>';"){
// First time around, do not delete.
if( toDeleteFlag ){
// Fix busy state in FF3
setTimeout( function() {
d.body.removeChild(iframe);
}, 0);
}
return;
}
var doc = iframe.contentDocument ? iframe.contentDocument : frames[iframe.id].document;
// fixing Opera 9.26
if (doc.readyState && doc.readyState != 'complete'){
// Opera fires load event multiple times
// Even when the DOM is not ready yet
// this fix should not affect other browsers
return;
}
// fixing Opera 9.64
if (doc.body && doc.body.innerHTML == "false"){
// In Opera 9.64 event was fired second time
// when body.innerHTML changed from false
// to server response approx. after 1 sec
return;
}
var response;
if (doc.XMLDocument){
// response is a xml document IE property
response = doc.XMLDocument;
} else if (doc.body){
// response is html document or plain text
response = doc.body.innerHTML;
if (settings.responseType && settings.responseType.toLowerCase() == 'json'){
// If the document was sent as 'application/javascript' or
// 'text/javascript', then the browser wraps the text in a <pre>
// tag and performs html encoding on the contents. In this case,
// we need to pull the original text content from the text node's
// nodeValue property to retrieve the unmangled content.
// Note that IE6 only understands text/html
if (doc.body.firstChild && doc.body.firstChild.nodeName.toUpperCase() == 'PRE'){
response = doc.body.firstChild.firstChild.nodeValue;
}
if (response) {
response = window["eval"]("(" + response + ")");
} else {
response = {};
}
}
} else {
// response is a xml document
var response = doc;
}
settings.onComplete.call(self, file, response);
// Reload blank page, so that reloading main page
// does not re-submit the post. Also, remember to
// delete the frame
toDeleteFlag = true;
// Fix IE mixed content issue
iframe.src = "javascript:'<html></html>';";
});
} else {
// clear input to allow user to select same file
// Doesn't work in IE6
// this._input.value = '';
d.body.removeChild(this._input);
this._input = null;
// create new input
this._createInput();
}
},
/**
* Creates form, that will be submitted to iframe
*/
_createForm : function(iframe){
var settings = this._settings;
// method, enctype must be specified here
// because changing this attr on the fly is not allowed in IE 6/7
var form = toElement('<form method="post" enctype="multipart/form-data"></form>');
form.style.display = 'none';
form.action = settings.action;
form.target = iframe.name;
d.body.appendChild(form);
// Create hidden input element for each data key
for (var prop in settings.data){
var el = d.createElement("input");
el.type = 'hidden';
el.name = prop;
el.value = settings.data[prop];
form.appendChild(el);
}
return form;
}
};
})();
ドラッグアンドドロップの場合は、このサイトまたはこれを参照できる別の関数を作成する必要があります
于 2012-05-28T06:04:55.203 に答える
-1
http://www.plupload.com/example_queuewidget.php ここでは、複数の画像をアップロードするのに役立つ素晴らしいプラグインを見つけることができます。私はこれを使用していて、うまく機能しています。
于 2012-05-28T06:02:01.400 に答える