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How to change the opacity (alpha, transparency) of an element in a canvas element after it has been
Using the HTML5 <canvas> element, I would like to load an image file (PNG, JPEG, etc.), draw it to the canvas completely transparently, and then fade it in. I have figured out how to load the image and draw it to the canvas, but I don't know how to change its opacity once it as been drawn.
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Calculate text width with JavaScript
...
In HTML 5, you can just use the Canvas.measureText method (further explanation here).
Try this fiddle:
/**
* Uses canvas.measureText to compute and return the width of the given text of given font in pixels.
*
* @param {Stri...
How to get current time with jQuery
...
newDate.setDate(newDate.getDate());
// setting date and time
$('#Date').html(dayNames[newDate.getDay()] + " " + newDate.getDate() + ' ' + monthNames[newDate.getMonth()] + ' ' + newDate.getFullYear());
setInterval( function() {
// Create a newDate() object and extract the seconds of the curren...
How to add a search box with icon to the navbar in Bootstrap 3?
...
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1"...
Sanitizing strings to make them URL and filename safe?
...string $input, [bool $wrap = false])
encodeForCSS (string $input)
encodeForHTML (string $input)
encodeForHTMLAttribute (string $input)
encodeForJavaScript (string $input)
encodeForOS (Codec $codec, string $input)
encodeForSQL (Codec $codec, string $input)
encodeForURL (string $input)
encodeForVBScri...
ETag vs Header Expires
... @GMsoF You may want to take a look at this: tools.ietf.org/html/rfc7232#section-2.1
– Medeiros
Feb 19 '16 at 2:14
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Why would one omit the close tag?
...utput) causes the headers to be sent as soon as it's output. There are no "HTML headers" (other than the unrelated HTML5 <header> tag).
– Halil Özgür
Feb 15 '15 at 12:13
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Div width 100% minus fixed amount of pixels
... right rounded corners, and a center image that repeats between them.
The HTML:
<div class="Header">
<div>
<div>This is the dynamic center area</div>
</div>
</div>
The CSS:
.Header {
background: url(left.gif) no-repeat;
padding-left: 30px;
}...
How do I keep two side-by-side divs the same height?
...jQuery
Using jQuery, you can do it in a super simple one-line-script.
// HTML
<div id="columnOne">
</div>
<div id="columnTwo">
</div>
// Javascript
$("#columnTwo").height($("#columnOne").height());
Using CSS
This is a bit more interesting. The technique is called Faux ...
Smarty中date_format日期格式化详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...1 day'));
$smarty->assign('time', $time);
$smarty->display('index.html');
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" co...