我在访问可拖放到其他元素上的可拖动元素时遇到问题,这是一个可拖动的元素。我想要的代码是根据被删除的元素执行不同的指令。例如,如果我在目标上删除一个id为“element1”的元素(这是可放置的元素),那么将执行某些指令;如果我在目标上删除一个id为“element2”的元素(这是可放置的元素),那么将执行另一组指令。对于上一个短语中描述的示例,根据我所知,访问element1的一个父母,可以使用 $(ui.draggable).parents(“#element1”) ,要访问element2的父母,可以使用 $(ui.draggable).parents(“#element2”) 。通过使用长度属性,我应该得到父母的数量。在droppable元素的drop事件中使用,这两个序列 $(ui.draggable).parents(“#element1”)。length , $(ui.draggable).parents(“#element2”)。length 应检测哪个元素被删除,以便执行正确的指令。 在我的应用程序中,droppable元素是 #up_spin_1s ,而droppables是#electron_1 和#electron_1。所以我想要的是根据被删除的元素执行不同的指令。只有 * if($(ui.draggable).parents(“#electron_1”)。length){* 块的指令才会被执行,无论丢弃什么元素。
贝娄是讨论过的代码:
$("#up_spin_1s").droppable({
accept: "#electron_1, #electron_2",
drop: function(event,ui) {
if($(ui.draggable).parents("#electron_1").length){
$("#exp_1s").html("1");
$(this).append('<div id="electron_I"></div>');
contoar++;
if (contoar == limitare && n == 1) {
alert("Primul electron al unui orbital este setat sa fie acela cu spinul up!"+"\n"+"Configuratie incheiata cu success!");
$(this).droppable("disable");
}
}
if($(ui.draggable).parents("#electron_2").length){
$("#exp_1s").html("1");
$(this).append('<div id="electron_II"></div>');
contoar++;
if (contoar == limitare && n == 1) {
alert("Primul electron al unui orbital este setat sa fie acela cu spinul up!"+"\n"+"Configuratie incheiata cu success!");
$(this).droppable("disable");
}
}
}
});
Bellow是整个HTML代码:
<html>
Repartiţiaelectrililorpe orbitali,straturişinbasraturipentru primele 36 de elemente
function activateApp() {
var infoSelected = document.getElementById("option_selected_text");
var element= new Array();
element[0]="";
element[1] = "Hidrogen";
element[2] = "Heliu";
element[3] = "Litiu";
element[4] = "Beriliu";
element[5] = "Bor";
element[6] = "Carbon";
element[7] = "Azot";
element[8] = "Oxigen";
element[9] = "Fluor";
element[10] = "Neon";
element[11] = "Sodiu";
element[12] = "Magneziu";
element[13] = "Aluminiu";
element[14] = "Siliciu";
element[15] = "Fosfor";
element[16] = "Sulf";
element[17] = "Clor";
element[18] = "Argon";
element[19] = "Potasiu";
element[20] = "Calciu";
element[21] = "Scandiu";
element[22] = "Titan";
element[23] = "Vanadiu";
element[24] = "Crom";
element[25] = "Mangan";
element[26] = "Fier";
element[27] = "Cobalt";
element[28] = "Nichel";
element[29] = "Cupru";
element[30] = "Zinc";
element[31] = "Galiu";
element[32] = "Germaniu";
element[33] = "Arsen";
element[34] = "Seleniu";
element[35] = "Brom";
element[36] = "Kripton";
var simbol = new Array();
simbol[0] = "";
simbol[1] = "H";
simbol[2] = "He ";
simbol[3] = "Li";
simbol[4] = "Be";
simbol[5] = "B";
simbol[6] = "C";
simbol[7] = "N";
simbol[8] = "O";
simbol[9] = "F";
simbol[10] = "Ne";
simbol[11] = "Na";
simbol[12] = "Mg";
simbol[13] = "Al";
simbol[14] = "Si";
simbol[15] = "P";
simbol[16] = "S";
simbol[17] = "Cl";
simbol[18] = "Ar";
simbol[19] = "K";
simbol[20] = "Ca";
simbol[21] = "Sc";
simbol[22] = "Ti";
simbol[23] = "V";
simbol[24] = "Cr";
simbol[25] = "Mn";
simbol[26] = "Fe";
simbol[27] = "Co";
simbol[28] = "Ni";
simbol[29] = "cu";
simbol[30] = "Zn";
simbol[31] = "Ga";
simbol[32] = "Ge";
simbol[33] = "As";
simbol[34] = "se";
simbol[35] = "Br";
simbol[36] = "Kr";
var exponent = new Array();
exponent[0] = document.getElementById("exp_1s");
exponent[1] = document.getElementById("exp_2s");
exponent[2] = document.getElementById("exp_2p");
exponent[3] = document.getElementById("exp_3s");
exponent[4] = document.getElementById("exp_3p");
exponent[5] = document.getElementById("exp_4s");
exponent[6] = document.getElementById("exp_3d");
exponent[7] = document.getElementById("exp_4p");
var electron = new Array();
electron[0] = "#up_spin_1s";
electron[1] = "#down_spin_1s";
electron[2] = "#up_spin_2s";
electron[3] = "#down_spin_2s";
electron[4] = "#up_spin_2p_1";
electron[5] = "#up_spin_2p_2";
electron[6] = "#up_spin_2p_3";
electron[7] = "#down_spin_2p_1";
electron[8] = "#down_spin_2p_2";
electron[9] = "#down_spin_2p_3";
electron[10] = "#up_spin_3s";
electron[11] = "#down_spin_3s";
electron[12] = "#up_spin_3p_1";
electron[13] = "#up_spin_3p_2";
electron[14] = "#up_spin_3p_3";
electron[15] = "#down_spin_3p_1";
electron[16] = "#down_spin_3p_2";
electron[17] = "#down_spin_3p_3";
electron[18] = "#up_spin_4s";
electron[19] = "#down_spin_4s";
electron[20] = "#up_spin_3d_1";
electron[21] = "#up_spin_3d_2";
electron[22] = "#up_spin_3d_3";
electron[23] = "#up_spin_3d_4";
electron[24] = "#up_spin_3d_5";
electron[25] = "#down_spin_3d_1";
electron[26] = "#down_spin_3d_2";
electron[27] = "#down_spin_3d_3";
electron[28] = "#down_spin_3d_4";
electron[29] = "#down_spin_3d_5";
electron[30] = "#up_spin_4p_1";
electron[31] = "#up_spin_4p_2";
electron[32] = "#up_spin_4p_3";
electron[33] = "#down_spin_4p_1";
electron[34] = "#down_spin_4p_2";
electron[35] = "#down_spin_4p_3";
var tip_spin = new Array();
tip_spin["up"] = "#electron_1";
tip_spin["down"] = "#electron_2";
var cont = false;
var choosed = val.value;
var n = parseInt(choosed);
var tip_up = new RegExp("up");
var tip_down = new RegExp("down");
//tip_up.exec(electron[35]) va returna down;;;
var a = "#up_spin_1s";
var b = "#down_spin_1s";
var c = "#up_spin_2s";
var d = "#electron_1";
var e = "#electron_2";
var f = "#electron_1";
var contor = 0;
var limita = 1;
var contoar = 0;
var limitare = 1;
$(infoSelected).html("Element: "+"<i>"+element[n]+"</i>"+" "+"Simbol: "+"<i>"+simbol[n]+"</i>");
$( "#electron_1" ).draggable({
revert: true
});
$( "#electron_2" ).draggable({
revert: true
});
$("#up_spin_1s").droppable({
accept: "#electron_1, #electron_2",
drop: function(event,ui) {
if(!$(ui.draggable).parents("#electron_2").length){
$("#exp_1s").html("1");
$(this).append('<div id="electron_I"></div>');
contoar++;
if (contoar == limitare && n == 1) {
alert("Primul electron al unui orbital este setat sa fie acela cu spinul up!"+"\n"+"Configuratie incheiata cu success!");
$(this).droppable("disable");
}
}
if($(ui.draggable).parents("#electron_2").length){
$("#exp_1s").html("1");
$(this).append('<div id="electron_I"></div>');
contor++;
if (contor == limita && n == 1) {
alert("Primul electron al unui orbital este setat sa fie acela cu spinul up!"+"\n"+"Configuratie incheiata cu success!");
$(this).droppable("disable");
}
}
}
});
if(n>1){
for(i = 1 ; i <=35 ; i++)
{
$("#up_spin_1s").droppable({
accept: "#electron_1, #electron_2",
drop: function(event,ui) {
if($(ui.draggable).parents("#electron_1").length){
$("#exp_1s").html("1");
$(this).append('<div id="electron_II"></div>');
contoar++;
if (contoar == limitare && n == 1) {
alert("Primul electron al unui orbital este setat sa fie acela cu spinul up!"+"\n"+"Configuratie incheiata cu success!");
$(this).droppable("disable");
}
}
compute(electron[1],tip_spin["down"],electron[2],tip_spin["up"]);
}
});
}
}
else
{
for(i = 1 ; i <=35 ; i++){
$(electron[i]).droppable("disable");
}
}
}
function compute(z,w,r,s) {
var counter = 0;
var limit = 1;
var cur=0;
var lim=1;
$(z).droppable({
accept: w,
drop: function(event,ui) {
$("#exp_1s").html("2");
$(z).append('<div id="electron_II"></div>');
cur++;
if (cur == lim) {
$(this).droppable("disable");
}
var curu = 0;
var limi = 1;
$(r).droppable({
accept: s,
drop: function(event,ui) {
$("#exp_2s").html("1");
$(r).append('<div id="electron_I"></div>');
curu++;
if (curu == limi) {
$(this).droppable("disable");
}
}
});
}
});
}
</script>
<div id="main">
<a href="repartitie.html">Cum se repartizează electronii pe orbitali, straturi şi substraturi </a>
<a href="lectie.html"> Structura învelişului electronic </a>
<a href="#" onclick="#"> Help(?) </a>
</div>
<div id="config_container">
<div id="axis">
<img src="images/axis.png">
</div>
<div id="orbital_container">
<div id="orbital_content">
<div class="orbital_label"> 4p<sup id="exp_4p"><div style="display: inline; color: #ffffff;">0</div></sup> </div>
<div class="electron_pear">
<div id="up_spin_4p_1" class="up_spin_4p_1"></div>
<div id="down_spin_4p_1" class="down_spin_4p_1"></div>
</div>
<div class="electron_pear">
<div id="up_spin_4p_2" class="up_spin_4p_2"></div>
<div id="down_spin_4p_2" class="down_spin_4p_2"></div>
</div>
<div class="electron_pear">
<div id="up_spin_4p_3" class="up_spin_4p_3"></div>
<div id="down_spin_4p_3" class="down_spin_4p_3"></div>
</div>
</div>
<div id="orbital_content">
<div class="orbital_label"> 3d<sup id="exp_3d"><div style="display: inline; color: #ffffff;">0</div></sup> </div>
<div class="electron_pear">
<div id="up_spin_3d_1" class="up_spin_3d_1"></div>
<div id="down_spin_3d_1" class="down_spin_3d_1"></div>
</div>
<div class="electron_pear">
<div id="up_spin_3d_2" class="up_spin_3d_2"></div>
<div id="down_spin_3d_2" class="down_spin_3d_2"></div>
</div>
<div class="electron_pear">
<div id="up_spin_3d_3" class="up_spin_3d_3"></div>
<div id="down_spin_3d_3" class="down_spin_3d_3"></div>
</div>
<div class="electron_pear">
<div id="up_spin_3d_4" class="up_spin_3d_4"></div>
<div id="down_spin_3d_4" class="down_spin_3d_4"></div>
</div>
<div class="electron_pear">
<div id="up_spin_3d_5" class="up_spin_3d_5"></div>
<div id="down_spin_3d_5" class="down_spin_3d_5"></div>
</div>
</div>
<div id="orbital_content">
<div class="orbital_label"> 4s<sup id="exp_4s"><div style="display: inline; color: #ffffff;">0</div></sup> </div>
<div class="electron_pear">
<div id="up_spin_4s" class="up_spin_4s"></div>
<div id="down_spin_4s" class="down_spin_4s"></div>
</div>
</div>
<div id="orbital_content">
<div class="orbital_label"> 3p<sup id="exp_3p"><div style="display: inline; color: #ffffff;">0</div></sup> </div>
<div class="electron_pear">
<div id="up_spin_3p_1" class="up_spin_3p_1"></div>
<div id="down_spin_3p_1" class="down_spin_3p_1"></div>
</div>
<div class="electron_pear">
<div id="up_spin_3p_2" class="up_spin_3p_2"></div>
<div id="down_spin_3p_2" class="down_spin_3p_2"></div>
</div>
<div class="electron_pear">
<div id="up_spin_3p_3" class="up_spin_3p_3"></div>
<div id="down_spin_3p_3" class="down_spin_3p_3"></div>
</div>
</div>
<div id="orbital_content">
<div class="orbital_label"> 3s<sup id="exp_3s"><div style="display: inline; color: #ffffff;">0</div></sup> </div>
<div class="electron_pear">
<div id="up_spin_3s" class="up_spin_3s"></div>
<div id="down_spin_3s" class="down_spin_3s"></div>
</div>
</div>
<div id="orbital_content">
<div class="orbital_label"> 2p<sup id="exp_2p"><div style="display: inline; color: #ffffff;">0</div></sup> </div>
<div class="electron_pear">
<div id="up_spin_2p_1" class="up_spin_2p_1"></div>
<div id="down_spin_2p_1" class="down_spin_2p_1"></div>
</div>
<div class="electron_pear">
<div id="up_spin_2p_2" class="up_spin_2p_2"></div>
<div id="down_spin_2p_2" class="down_spin_2p_2"></div>
</div>
<div class="electron_pear">
<div id="up_spin_2p_3" class="up_spin_2p_3"></div>
<div id="down_spin_2p_3" class="down_spin_2p_3"></div>
</div>
</div>
<div id="orbital_content">
<div class="orbital_label"> 2s<sup id="exp_2s"><div style="display: inline; color: #ffffff;">0</div></sup> </div>
<div class="electron_pear">
<div id="up_spin_2s" class="up_spin_2s"></div>
<div id="down_spin_2s" class="down_spin_2s"></div>
</div>
</div>
<div id="orbital_content">
<div class="orbital_label"> 1s<sup id="exp_1s"><div style="display: inline; color: #ffffff;">0</div></sup> </div>
<div class="electron_pear">
<div id="up_spin_1s" class="up_spin_1s"></div>
<div id="down_spin_1s" class="down_spin_1s"></div>
</div>
</div>
</div>
</div>
<div id="control_container">
<div id="settings_container">
<div id="settings_content">
<div class="z_text"> Z = </div>
<select id="val" name="val">
<option value="1" selected="selected">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
<option value="7">7</option>
<option value="8">8</option>
<option value="9">9</option>
<option value="10">10</option>
<option value="11">11</option>
<option value="12">12</option>
<option value="13">13</option>
<option value="14">14</option>
<option value="15">15</option>
<option value="16">16</option>
<option value="17">17</option>
<option value="18">18</option>
<option value="19">19</option>
<option value="20">20</option>
<option value="21">21</option>
<option value="22">22</option>
<option value="23">23</option>
<option value="24">24</option>
<option value="25">25</option>
<option value="26">26</option>
<option value="27">27</option>
<option value="28">28</option>
<option value="29">29</option>
<option value="30">30</option>
<option value="31">31</option>
<option value="32">32</option>
<option value="33">33</option>
<option value="34">34</option>
<option value="35">35</option>
<option value="36">36</option>
</select>
<div id="electron_1"></div>
<div id="electron_2"></div>
<a href="javascript: void(0)" ><input type="button" name="Submit" value="Start" class="confirmed" onclick="activateApp();"/></a>
<a href="javascript: void(0)" ><input type="button" name="Submit" value="Resetare" class="erase" onclick="#"/> </a>
</div>
<div id="settings_content" style="margin-top: 15px;">
<div id="option_selected_text"></div>
</div>
任何帮助都会非常有用!
答案 0 :(得分:2)
我不确定我是否理解正确,但这里有一些想法。
drop事件中的 $(ui.draggable).parents("#element1");
表示“向我提供当前拖动对象的所有父母,其ID为element1
”。请注意,ui.draggable
已经是jQuery对象,无需调用$
函数。
您可以使用ui.draggable.parents("#element1").length
检查#element1
是否属于当前拖动对象的父项(返回1或0)。请注意parents()
NOT 会返回当前拖动的对象,只有它的祖先以其直接父级开头。
查看代码,实际上是在拖动#electron_1
和#electron_2
。要检查放弃事件中丢弃了哪一个,请使用if(ui.draggable.attr('id') == 'electron_1'){ /* Do stuff */ }
。
我不认为你的if($(ui.draggable).parents("#electron_1").length){...
曾经有效,你之所以这么认为是因为我找到了这句话:
if(!$(ui.draggable).parents("#electron_2").length){
以上总是如此,因为返回的jQuery对象的长度始终为0。
此外,我不确定这是否是故意的,但在可拖动上设置revert:true
将导致它始终恢复到其原始位置,这可能会让用户感到困惑。您可以使用revert:"invalid"
仅在未接受放弃的情况下将其删除。如果要将对象返回到起始位置,最好在成功删除时手动执行,而不使用默认的恢复动画。