JavaScript DHTML/jQuery/get
Содержание
Get first element in query set
<html>
<head>
<script type="text/javascript" src="js/jquery-1.3.2.js"></script>
<script type="text/javascript">
$(document).ready(function(){
var mappedItems = $("li").map(function (index) {
var data = $("<li>").text($(this).text()).get(0);
data = [data,$("<li>").get(0)];
$(data[0]).append("*");
return data;
});
$("#results").append(mappedItems);
});
</script>
</head>
<body>
<body>
<ul>
<li>asdf</li>
<li>asdf</li>
<li>asdf</li>
</ul>
<ul id="results">
</ul>
</body>
</html>
Get tag first parent
<html>
<head>
<script type="text/javascript" src="js/jquery-1.3.2.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("*", document.body).each(function () {
var parentTag = $(this).parent().get(0).tagName;
alert(parentTag);
});
});
</script>
<style>
.y { background:yellow; }
</style>
</head>
<body>
<body>
<div><button disabled="disabled">First</button> <span class="selected"></span>
<span></span>
</div>
</body>
</html>
Gives the tag name of the element clicked on.
<html>
<head>
<script type="text/javascript" src="js/jquery-1.3.2.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("*", document.body).click(function (e) {
e.stopPropagation();
var domEl = $(this).get(0);
$("span:first").text("Clicked on - " + domEl.tagName);
});
});
</script>
</head>
<body>
<body>
<span></span>
<p>A</p><div>B</div>
</body>
</html>
Uses the built-in reverse-method to reverse array
<html>
<head>
<script type="text/javascript" src="js/jquery-1.3.2.js"></script>
<script type="text/javascript">
$(document).ready(function(){
alert( $("p").get().reverse() );
});
</script>
</head>
<body>
<body>
<p>A</p><p>B</p>
</body>
</html>