我正在创建一些div,并使它们可以放置。这很好用,我可以删除draggables,实际上达到了droppable()函数。 为了进行一些测试,我需要访问我附加到div的数据:jQuery.data(this," pos")并将其与我附加到可拖动div的数据进行比较。
问题是ep和fp未定义。
document.write("<div id='tar_"+i+"' class='droppable' style='position:fixed;z-index:10;top:"+tar_y+"px; left:"+x+"px;'>"+phrase.charAt(i)+"</div>");
var tar = $( "#tar_"+i );
targets.push(tar);
jQuery.data(targets[i],"pos",i);
targets[i].droppable({
drop: function( event, ui ) {
var ep = jQuery.data(this,"pos");
var fp = jQuery.data(ui.draggable,"expos");
if(ep==fp) {
alert("great");
} else {
alert("next time");
}
}
});
是否可以在此上下文中访问jquery.data?
正如所建议的那样,我尝试了以下内容,但ep和fp仍未定义。
drop: function( event, ui ) {
var ep = $(this).data("pos");
var fp = $(ui.draggable).data("expos");
if(ep==fp) {
alert("great");
} else {
alert("next time");
}
}
});
另一个建议:
drop: function( event, ui ) {
var ep = jQuery.data(targets[i],"pos");
var fp = jQuery.data(letters[i],"pos");;
if(ep==fp) {
alert("great");
} else {
alert("next time");
}
}
});
导致:
&#34;未捕获的TypeError:无法读取属性&#39; nodeType&#39;未定义&#34;
这可能是有意义的,因为当调用drop函数时,局部变量i实际上不可用。
更多上下文
for(i=0; i<phrase.length; i++) {
document.write("<div id='chr_"+i+"' class='draggable' style='position:fixed;z-index:10;top:"+y+"px; left:"+x+"px;'>"+phrase.charAt(i)+"</div>");
var src = $( "#chr_"+i );
letters.push(src);
letters[i].draggable({
drag: function( event, ui ) {
jQuery.data(ui,"moving",false); //need to access the stored data here what doesn't seem to work like this.
}
});
jQuery.data(letters[i],"moving",true);
jQuery.data(letters[i],"expos",i);
document.write("<div id='tar_"+i+"' class='droppable' style='position:fixed;z-index:10;top:"+tar_y+"px; left:"+x+"px;'>"+phrase.charAt(i)+"</div>");
var tar = $( "#tar_"+i );
targets.push(tar);
jQuery.data(targets[i],"pos",i);
targets[i].droppable({
drop: function( event, ui ) {
//need to access the data here,
//but doesn't seem to work in the
//following ways (t1-3):
var t1 = $(this).data("pos");
var t2 = jQuery.data(targets[i],"pos");
var t3 = jQuery.data($(ui.draggable),"expos");
if(ep==fp) {
alert("great");
} else {
alert("next time");
}
}
});
}
我做错了什么?