好的,我不断收到错误消息,无法拖动任何 div...
错误信息如下:
未捕获的异常:TypeError: '$(".polaroid_attachments_mod_25").draggable' is not a function 在http://developers.dream-portal.net/test/index.php中 ($) 中的第 343 行第 4 列抛出错误: $(".polaroidpolaroid_attachments_mod_25").draggable({ 通过 Function.prototype.apply() 从第 2 行调用,在 http://ajax.googleapis.com/ajax/libs/jquery/1/ (t) 中的第 33900 列jquery.min.js : if(a[u].apply(t[0],t[1])===!1&&e.stopOnFalse) 从 http://ajax 中 () 中的第 2 行第 34244 列调用。 googleapis.com/ajax/libs/jquery/1/jquery.min.js: (function r(t){v.each(t,function(t,n){var i=v.type(n);i==="function"?(!e.unique||!c.has (n))&&a.push(n):n&&n.length&&i!=="string"&&r(n)})})(参数),i?o=a.length:n&&(s=t,l(n) ) 从http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js (e) 中的第 2 行第 22488 列调用 :返回 v.ready.promise().done(e) ,这从http://developers.dream-portal.net/test/index.php中 startPolaroids() 的第 276 行第 3 列调用 : jQuery(document).ready(function($){ 从第 1322 行调用,列5 in () 在 http://developers.dream-portal.net/test/Themes/default/scripts/script.js?fin20 : aOnloadEventsi;
我正在使用一个外部 js 文件,该文件通过以下功能加载到网页的头部:
var aOnloadEvents = new Array();
function addLoadEvent(fNewOnload)
{
// If there's no event set, just set this one
if (typeof(fNewOnload) == 'function' && (!('onload' in window) || typeof(window.onload) != 'function'))
window.onload = fNewOnload;
// If there's just one event, setup the array.
else if (aOnloadEvents.length == 0)
{
aOnloadEvents[0] = window.onload;
aOnloadEvents[1] = fNewOnload;
window.onload = function() {
for (var i = 0, n = aOnloadEvents.length; i < n; i++)
{
if (typeof(aOnloadEvents[i]) == 'function')
aOnloadEvents[i]();
else if (typeof(aOnloadEvents[i]) == 'string')
eval(aOnloadEvents[i]);
}
}
}
// This isn't the first event function, add it to the list.
else
aOnloadEvents[aOnloadEvents.length] = fNewOnload;
}
在网页正文中(这是我可以从运行它的脚本中访问的所有内容),我有以下用 PHP 编写的代码(所以请原谅引号的转义):
// Only want to load up jQuery 1 time here!
if(!window.jQuery)
{
var script = document.createElement("script");
script.type = "text/javascript";
script.async = true;
script.src = "//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js";
var oScripts = document.getElementsByTagName("script");
var s = oScripts[0];
s.parentNode.insertBefore(script, s);
}
if(!jQuery.ui)
{
var script = document.createElement("script");
script.type = "text/javascript";
script.async = true;
script.src = "//ajax.googleapis.com/ajax/libs/jqueryui/1/jquery-ui.min.js";
var oScripts = document.getElementsByTagName("script");
var s = oScripts[0];
s.parentNode.insertBefore(script, s);
}
function randomNum_polaroid_attachments_mod_25(minVal, maxVal)
{
var randVal = minVal + (Math.random() * (maxVal - minVal + 1));
return Math.round(randVal);
}
function startPolaroids()
{
jQuery(document).ready(function($){
// Set up default values.
var offsetStartX = 0;
var offsetEndX = $(document).width() - $(".polaroidpolaroid_attachments_mod_25").width();
var offsetStartY = 0;
var offsetEndY = $(document).height() - $(".polaroidpolaroid_attachments_mod_25").height();
var objContain = 'document';
var objEle = document.getElementById("placeholder");
if (objEle)
{
var getObjOffset = $("#placeholder").position();
offsetStartX = getObjOffset.left;
offsetEndX = (offsetStartX + $("#placeholder").outerWidth(true)) - $(".polaroidpolaroid_attachments_mod_25").width();
offsetStartY = getObjOffset.top;
offsetEndY = (offsetStartY + $("#placeholder").outerHeight(true)) - $(".polaroidpolaroid_attachments_mod_25").height();
if (offsetEndY < offsetStartY)
offsetEndY = offsetStartY + 1;
if (offsetEndX < offsetStartX)
offsetEndX = offsetStartX + 1;
objContain = '#placeholder';
}
// When everything has loaded, place all polaroids on a random position relative to document or element id!
$(".polaroidpolaroid_attachments_mod_25").each(function (i) {
var tempVal = Math.round(Math.random());
if(tempVal == 1) {
var rotDegrees = randomNum_polaroid_attachments_mod_25(330, 360); // rotate left
} else {
var rotDegrees = randomNum_polaroid_attachments_mod_25(0, 30); // rotate right
}
var cssObj = { 'left' : randomNum_polaroid_attachments_mod_25(offsetStartX, offsetEndX),
'top' : randomNum_polaroid_attachments_mod_25(offsetStartY, offsetEndY),
msTransform: 'rotate('+ rotDegrees + 'deg)', // IE 9
'-moz-transform' : 'rotate('+ rotDegrees + 'deg)', // Firefox
'-webkit-transform' : 'rotate('+ rotDegrees + 'deg)', // Safari & Chrome
'-o-transform' : 'rotate('+ rotDegrees + 'deg)', // Opera
'transform' : 'rotate\('+ rotDegrees + 'deg)' }; // added in case CSS3 is standard
$(this).css(cssObj);
});
// Set the Z-Index (used to display images on top while dragging)
var zindexnr = 1;
// boolean to check if the user is dragging
var dragging = false;
// Show the polaroid on top when clicked on
$(".polaroidpolaroid_attachments_mod_25").mouseup(function(e){
if(!dragging) {
// Bring polaroid to the foreground
zindexnr++;
var cssObj = { 'z-index' : zindexnr,
'transform' : 'rotate(0deg)', // added in case CSS3 is standard
'-webkit-transform' : 'rotate(0deg)', // Chrome and Safari
msTransform: 'rotate(0deg)', // IE 9
'-moz-transform' : 'rotate(0deg)', // Firefox
'-o-transform' : 'rotate(0deg)' }; // Opera
$(this).css(cssObj);
}
});
// Make the polaroid draggable & display a shadow when dragging
$(".polaroidpolaroid_attachments_mod_25").draggable({
cursor: 'pointer',
containment: objContain,
start: function(event, ui) {
dragging = true;
zindexnr++;
var cssObj = { 'box-shadow' : '#888 5px 10px 10px', // added in case CSS3 is standard
'-ms-box-shadow' : '#888 5px 10px 10px', // IE 9
'-o-box-shadow' : '#888 5px 10px 10px', // Opera
'-moz-box-shadow' : '#888 5px 10px 10px', // firefox 3.5 - 4.0
'-webkit-box-shadow' : '#888 5px 10px 10px', // Chrome & Safari
'margin-left' : '-10px',
'margin-top' : '-10px',
'z-index' : zindexnr };
$(this).css(cssObj);
},
stop: function(event, ui) {
var tempVal = Math.round(Math.random());
if(tempVal == 1) {
var rotDegrees = randomNum_polaroid_attachments_mod_25(330, 360); // rotate left
} else {
var rotDegrees = randomNum_polaroid_attachments_mod_25(0, 30); // rotate right
}
var cssObj = { 'box-shadow' : '', // added in case CSS3 is standard
'-ms-box-shadow' : '', // IE 9
'-o-box-shadow' : '', // Opera
'-moz-box-shadow' : '', // firefox 3.5 - 4.0
'-webkit-box-shadow' : '', // Chrome & Safari
'transform' : 'rotate('+ rotDegrees + 'deg)', // added in case CSS3 is standard
'-webkit-transform' : 'rotate('+ rotDegrees + 'deg)', // Chrome & Safari
msTransform: 'rotate('+ rotDegrees + 'deg)', // IE 9
'-moz-transform' : 'rotate('+ rotDegrees + 'deg)', // Firefox
'-o-transform' : 'rotate('+ rotDegrees + 'deg)', // Opera
'margin-left' : '0px',
'margin-top' : '0px' };
$(this).css(cssObj);
dragging = false;
}
});
})
}
// Calling SMF js function, defined in script.js, here.
addLoadEvent(startPolaroids);
我无法拖动 div,它们确实存在于 HTML 中。我在上面得到了那个错误,所以,试图在这里查明确切的问题,可以用另一双眼睛来解决这个问题。
如果有帮助,这里还有一个指向实际页面的链接:http: //developers.dream-portal.net/test/index.php
多谢你们 :)
所以,如果我改变这个:
// Only want to load up jQuery 1 time here!
if(!window.jQuery)
{
var script = document.createElement("script");
script.type = "text/javascript";
script.async = true;
script.src = "//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js";
var oScripts = document.getElementsByTagName("script");
var s = oScripts[0];
s.parentNode.insertBefore(script, s);
}
if(!jQuery.ui)
{
var script = document.createElement("script");
script.type = "text/javascript";
script.async = true;
script.src = "//ajax.googleapis.com/ajax/libs/jqueryui/1/jquery-ui.min.js";
var oScripts = document.getElementsByTagName("script");
var s = oScripts[0];
s.parentNode.insertBefore(script, s);
}
对此:
if(!window.jQuery)
{
var script = document.createElement("script");
var uiScript = document.createElement("script");
script.type = "text/javascript";
uiScript.type = "text/javascript";
script.async = false;
uiScript.async = false;
script.src = "//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js";
uiScript.src = "//ajax.googleapis.com/ajax/libs/jqueryui/1/jquery-ui.min.js";
var oScripts = document.getElementsByTagName("script");
var s = oScripts[0];
s.parentNode.insertBefore(script, s);
s.parentNode.insertBefore(uiScript, s);
}
它比 WORKS 看起来不错,但是如果 jQuery 存在并且 jQuery UI 尚未出现在页面上,则代码不会将 jQuery UI 放入其中。我该怎么做呢?因为其他软件也可能在操作页面,并将 jQuery 添加到页面中。我应该如何编码?认为我们不能使用 oScripts[0] 插入到该元素之前......因为我们真的不知道从哪里调用 jQuery,只是它存在......