我給了用戶在屏幕上生成輸入並移動每個字符的能力。如何限制可拖動對象移動到某個區域?
我不希望他們能夠移動/放置這些字符的任何地方,但我想限制運動到一個小方形或矩形。
HTML
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.0/jquery.min.js">
</script>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.9/jquery-ui.min.js"></script>
<div id="word-container">
<div class="character">P</div>
<div class="character">l</div>
<div class="character">a</div>
<div class="character">c</div>
<div class="character">e</div>
<div class="character">m</div>
<div class="character">a</div>
<div class="character">r</div>
<div class="character">k</div>
</div>
<br>
<br>
<form action="demo_form">
Word:
<input type="text" id="my-word" name="fname">
<br>
<button type="button" id="make-word">Make word</button>
</form>
CSS
.character {
width: 10px;
height: 15px;
font-size: 50px;
display: inline;
cursor: drag;
}
JQuery的
function initDragable($elements) {
$elements.draggable();
}
initDragable($('.character'));
$(function(){
$('#make-word').click(function() {
var $this = $(this);
var letters = $('#my-word').val().split('');
letters = '<div class="character">'+letters.join('</div><div class="character">')+'</div>';
initDragable($('#word-container').html(letters).find('.character'));
});
});
使用html5原生drap&drop,你可以使用一個屬性https://html.spec.whatwg.org/multipage/interaction.html#the-dropzone-attribute –