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javascript - draggables 的 jquery 计数器(甚至更多!!!)

转载 作者:行者123 更新时间:2023-11-28 06:05:54 25 4
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我需要以下代码中 CSS 的进一步帮助 - 这是这篇文章的延续:

jQuery: Counter for draggables (again!)

因此,下面的代码旨在计算 table 布上盘子的数量,如果您将一个盘子从 table 布上移开,则计数器会下降。

该代码或多或少有效,但是,当您单击一个盘子将其拖动时,该盘子会跳到不同的位置。当您将盘子放在 table 布上时也会发生同样的情况:它不是落在您希望它落在的地方,而是落在其他地方……非常烦人。谁能就如何解决问题提出建议?

$(init);

function init() {



var j = 0;
$("#counter").find("h1").html("You keep: " + j);

$(".fish").draggable({
addClasses: true,
refreshPositions: true,
//When you start dragging you append to body mainly to remove
// from cloth div
start: function(e, ui) {
ui.helper.appendTo('body');
},
//You move your out logic to stop. So if the element hasn't been added
// to cloth, it won't be counter
stop: function(e, ui) {
j = $(".cloth .fish").length;
j = j + 0;
$("#counter").find("h1").html("You keep: " + j);
}

});

$(".cloth").droppable({
accept: ".fish",
tolerance: "fit",
drop: function(event, ui) {
//On drop you append fish to the cloth div so it's counted
$('.cloth').append(ui.helper.css({
position: 'absolute',
top: ui.helper.offset().top,
left: ui.helper.offset().left
}));
j = $(".cloth .fish").length;
j = j + 0;
$("#counter").find("h1").html("You keep: " + j);

},


});


}
.mybox {
width: 90%;
height: 10px;
position: absolute;
bottom: 10%;
margin-left: 5%;
text-align: center;
maring: auto;
background-color: orange;
}
#stop-top {
position: relative;
background-color: orange;
}
.fish {
margin: .5em;
font-size: 1.2em;
position: relative;
display: inline-block;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
border-radius: 50%;
width: 50px;
height: 50px;
background: #BAB6B2;
float: left;
border: .3em solid #4B027C;
}
.cloth {
width: 90%;
height: 210px;
border-radius: 15px;
border: 5% solid rgba(200, 0, 0, .5);
margin: 0 auto;
background-color: white;
background-image: linear-gradient(90deg, rgba(200, 0, 0, .5) 50%, transparent 50%), linear-gradient(rgba(200, 0, 0, .5) 50%, transparent 50%);
background-size: 20px 20px;
}
.ui-draggable-dragging {
position: absolute;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
<link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/themes/smoothness/jquery-ui.css">
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script>
<div class='mybox' style='top:5%;height:70%;'>
<div id="counter" style="margin-left:5%;">
<h1>You keep: 0</h1>
</div>
<div class="cloth"></div>
<div class="fish" style="margin-left: 5%;"></div>
<div class="fish"></div>
<div class="fish"></div>
<div class="fish"></div>
<div class="fish"></div>
<div class="fish"></div>
</div>

<div class='mybox' style='height:20%; background-color:blue;'>
<button type="button" class="btn btn-primary " name="buttonSend">
<span class="glyphicon glyphicon-ok"></span> Ok
</button>
</div>

感谢您的帮助!最好的,

最佳答案

因此,我找到了一种使用原生 HTML5 功能并放弃 jQuery 来解决该问题的方法。该解决方案虽然不完美,但解决了将元素拖放到窗口“错误”区域时“跳跃”元素的问题。

总结一下:使用HTML5原生特性让相关元素可以拖放。然后使用 document.getElementById("yourDivId").childNodes.length计算可转换区域中的 child 数量。这是在以下代码段中完成的。

//global variable: number of tokens.

var j = 0;

function doFirst(){



//Set intial variables by ref. to objects in the page.
token1 = document.getElementById('token1');
token2 = document.getElementById('token2');
token3 = document.getElementById('token3');
token4 = document.getElementById('token4');
token5 = document.getElementById('token5');
token6 = document.getElementById('token6');
//as soon as you start to drag token, fire the user's startdrag.
token1.addEventListener("dragstart", startDrag, false);
token2.addEventListener("dragstart", startDrag, false);
token3.addEventListener("dragstart", startDrag, false);
token4.addEventListener("dragstart", startDrag, false);
token5.addEventListener("dragstart", startDrag, false);
token6.addEventListener("dragstart", startDrag, false);
//Reference tablecloth too.
tablecloth = document.getElementById('tablecloth');
// Here you need thre listeners
// 1. when something enters table cloth do this...
// this bit function(e){e.preventDefault();} overrides different browsers' default
// action.
tablecloth.addEventListener("dragenter",function(e){e.preventDefault();},false);
tablecloth.addEventListener("dragover",function(e){e.preventDefault();},false);
tablecloth.addEventListener("dragleave",leavecloth,false);
tablecloth.addEventListener("drop",dropped,false);

contador = document.getElementById('contador');
junk = document.getElementById('junk');


middleground.addEventListener("dragenter",function(e){e.preventDefault();},false);
middleground.addEventListener("dragover",function(e){e.preventDefault();},false);
middleground.addEventListener("dragleave",leavestart,false);
middleground.addEventListener("drop",droppedout,false);


}

function startDrag(e){

// stands for an event (something) than happens in your browser.
// whenever an event occurs the browser stores information about events,
// e.g. event of moving mouse -stores x-y position. We will have to stores
// infor with our drop/drag event.

e.dataTransfer.setData('Text', e.target.id);


}

function dropped(e){

e.preventDefault();
var data = e.dataTransfer.getData('Text');
e.target.appendChild(document.getElementById(data));

j = document.getElementById("tablecloth").childNodes.length;

contador.innerHTML = j;
}

function droppedout(e){

e.preventDefault();
var data = e.dataTransfer.getData('Text');
e.target.appendChild(document.getElementById(data));
j = document.getElementById("tablecloth").childNodes.length;


contador.innerHTML = j;
}

function leavecloth(e){

leftcloth = 1;
junk.innerHTML = 'left cloth' + leftstart+leftcloth;
}
function leavestart(e){

leftstart = 1;
junk.innerHTML = 'left start' + leftstart+leftcloth;
}

window.addEventListener("load", doFirst, false); //As soon page loads do this
.mybox{

background-color: SkyBlue;
width: 100%;
height: 40%;
position: absolute;
bottom: 20%;

}
.myfooter{

background-color: Yellow;
width: 100%;
height: 20%;
position: absolute;
bottom: 0%;

}
.tablecloth {
width: 50%;
height:40%;
left: 25%;
position: absolute;

border-radius: 28px;


background-color:white;
background-image: linear-gradient(90deg, rgba(200,0,0,.5) 50%, transparent 50%),
linear-gradient(rgba(200,0,0,.5) 50%, transparent 50%);
background-size:20px 20px;
}

.fish {
margin:.5em;
font-size:1.2em;
position:relative;
display:inline-block;
-webkit-box-sizing:border-box;
-moz-box-sizing:border-box;
box-sizing:border-box;
border-radius: 50%;

width: 50px;
height: 50px;
background: #BAB6B2;
float: left;
border:.3em solid #4B027C ;
}
<!DOCTYPE html>
<html lang= "en">
<head>
<link rel = "stylesheet" href = "estilos.css">
<script src = "acciones.js"></script>

<head>

<body>



<div class = 'tablecloth' id = 'tablecloth'></div>
<div class = "mybox" id ='middleground'>


<div class = "fish" id = "token1" draggable="true"></div>
<div class = "fish" id = "token2" draggable="true"></div>
<div class = "fish" id = "token3" draggable="true"></div>
<div class = "fish" id = "token4" draggable="true"></div>
<div class = "fish" id = "token5" draggable="true"></div>
<div class = "fish" id = "token6" draggable="true"></div>


</div>
<div class = "myfooter">
<h1>
<div id = "contador">0</div><br>

</h1>
<h1>
<div id = "junk">nothingmuchs.</div><br>

</h1>

</div>
</body>


</html>

关于javascript - draggables 的 jquery 计数器(甚至更多!!!),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/36461021/

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