如何修改下面的代碼,以便繪製的線條是虛線,您可以在提供的jfiddle中看到它的操作。動畫逐步繪製虛線HTML5畫布和Jquery
<html>
<style>
#canvas
{
border-style:solid;
border-width:1px;
}
</style>
<div id="canvas">
<p>Hover over me</p>
</div>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
</html>
$(function() {
animateLine = function(canvas, hoverDivName, colorNumber, pathString) {
$('#' + hoverDivName).hover(
function() {
var line = canvas.path(pathString).attr({
stroke: colorNumber
});
var length = line.getTotalLength();
$('path[fill*="none"]').animate({
'to': 1
}, {
duration: 5000,
step: function(pos, fx) {
var offset = length * fx.pos;
var subpath = line.getSubpath(0, offset);
canvas.clear();
canvas.path(subpath).attr({
stroke: colorNumber
});
},
});
}, function() {
$('path[fill*="none"]').stop(true, false).fadeOut();
});
};
var canvas = Raphael('canvas', 200, 200);
var pathString = "M10 10L10 200L100 200Z";
animateLine(canvas, "canvas", "#000", pathString);
});
[whatwg規範的畫布](http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#line-styles)提到了一個setLineDash方法要做到這一點,但沒有我嘗試過的瀏覽器支持。 – Philipp 2013-02-25 12:03:29
請參閱[this](http://stackoverflow.com/questions/4576724/dotted-stroke-in-canvas)回答如何在畫布中製作虛線或虛線。 – Zemljoradnik 2013-02-25 12:20:08