How to get paragraph height using jQuery?
I've been trying to use $(".someid").height() to determine the height of a paragraph using jQuery, but the result always returns 0. What gives?
<p class="someid">Blah this is a test, I am trying to see when this wraps around what hei开发者_高级运维ght it might have. I want to know how tall this paragraph element i because it can change from element to element.</p>.
I've tried using display:block in the css, or even height:auto to see if I can force CSS to consider it to be a block of text, but no results there either.
Thanks!
You are probably doing the declaration on $(document).ready(), at which time the element is not rendered on the page, so there is no height. You'll have to do it on $(window).load() at which time the paragraph element will be rendered and will have a height.
Maybe you should test the example in the jquery documentation? For example here
This one works without any problems:
<!DOCTYPE html>
<html>
<head>
<style>
body { background:yellow; }
button { font-size:12px; margin:2px; }
p { width:150px; border:1px red solid; }
div { color:red; font-weight:bold; }
</style>
<script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
<button id="getp">Get Paragraph Height</button>
<button id="getd">Get Document Height</button>
<button id="getw">Get Window Height</button>
<div> </div>
<p>
Sample paragraph to test height
</p>
<script>
function showHeight(ele, h) {
$("div").text("The height for the " + ele +
" is " + h + "px.");
}
$("#getp").click(function () {
showHeight("paragraph", $("p").height());
});
$("#getd").click(function () {
showHeight("document", $(document).height());
});
$("#getw").click(function () {
showHeight("window", $(window).height());
});
</script>
</body>
</html>
加载中,请稍侯......
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