我试图在鼠标悬停时使用jQuery动画改变backgroundColor。
我检查了一些例子,我似乎有它是正确的,它与其他属性,如fontSize,但与backgroundColor我得到和“无效属性”js错误。 我正在使用的元素是div。
$(".usercontent").mouseover(function() {
$(this).animate({ backgroundColor: "olive" }, "slow");
});
什么好主意吗?
我试图在鼠标悬停时使用jQuery动画改变backgroundColor。
我检查了一些例子,我似乎有它是正确的,它与其他属性,如fontSize,但与backgroundColor我得到和“无效属性”js错误。 我正在使用的元素是div。
$(".usercontent").mouseover(function() {
$(this).animate({ backgroundColor: "olive" }, "slow");
});
什么好主意吗?
当前回答
试试这个:
(function($) {
var i = 0;
var someBackground = $(".someBackground");
var someColors = [ "yellow", "red", "blue", "pink" ];
someBackground.css('backgroundColor', someColors[0]);
window.setInterval(function() {
i = i == someColors.length ? 0 : i;
someBackground.animate({backgroundColor: someColors[i]}, 3000);
i++;
}, 30);
})(jQuery);
你可以在这里预览示例:http://jquerydemo.com/demo/jquery-animate-background-color.aspx
其他回答
你可以使用jQuery UI来添加这个功能。你可以抓取你所需要的,所以如果你想动画颜色,你所需要包括的是下面的代码。我得到了如果从最新的jQuery UI(目前1.8.14)
/******************************************************************************/
/****************************** COLOR ANIMATIONS ******************************/
/******************************************************************************/
// override the animation for color styles
$.each(['backgroundColor', 'borderBottomColor', 'borderLeftColor',
'borderRightColor', 'borderTopColor', 'borderColor', 'color', 'outlineColor'],
function(i, attr) {
$.fx.step[attr] = function(fx) {
if (!fx.colorInit) {
fx.start = getColor(fx.elem, attr);
fx.end = getRGB(fx.end);
fx.colorInit = true;
}
fx.elem.style[attr] = 'rgb(' +
Math.max(Math.min(parseInt((fx.pos * (fx.end[0] - fx.start[0])) + fx.start[0], 10), 255), 0) + ',' +
Math.max(Math.min(parseInt((fx.pos * (fx.end[1] - fx.start[1])) + fx.start[1], 10), 255), 0) + ',' +
Math.max(Math.min(parseInt((fx.pos * (fx.end[2] - fx.start[2])) + fx.start[2], 10), 255), 0) + ')';
};
});
// Color Conversion functions from highlightFade
// By Blair Mitchelmore
// http://jquery.offput.ca/highlightFade/
// Parse strings looking for color tuples [255,255,255]
function getRGB(color) {
var result;
// Check if we're already dealing with an array of colors
if ( color && color.constructor == Array && color.length == 3 )
return color;
// Look for rgb(num,num,num)
if (result = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(color))
return [parseInt(result[1],10), parseInt(result[2],10), parseInt(result[3],10)];
// Look for rgb(num%,num%,num%)
if (result = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(color))
return [parseFloat(result[1])*2.55, parseFloat(result[2])*2.55, parseFloat(result[3])*2.55];
// Look for #a0b1c2
if (result = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(color))
return [parseInt(result[1],16), parseInt(result[2],16), parseInt(result[3],16)];
// Look for #fff
if (result = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(color))
return [parseInt(result[1]+result[1],16), parseInt(result[2]+result[2],16), parseInt(result[3]+result[3],16)];
// Look for rgba(0, 0, 0, 0) == transparent in Safari 3
if (result = /rgba\(0, 0, 0, 0\)/.exec(color))
return colors['transparent'];
// Otherwise, we're most likely dealing with a named color
return colors[$.trim(color).toLowerCase()];
}
function getColor(elem, attr) {
var color;
do {
color = $.curCSS(elem, attr);
// Keep going until we find an element that has color, or we hit the body
if ( color != '' && color != 'transparent' || $.nodeName(elem, "body") )
break;
attr = "backgroundColor";
} while ( elem = elem.parentNode );
return getRGB(color);
};
用YUI压缩后只有1.43kb:
$.each(["backgroundColor","borderBottomColor","borderLeftColor","borderRightColor","borderTopColor","borderColor","color","outlineColor"],function(b,a){$.fx.step[a]=function(c){if(!c.colorInit){c.start=getColor(c.elem,a);c.end=getRGB(c.end);c.colorInit=true}c.elem.style[a]="rgb("+Math.max(Math.min(parseInt((c.pos*(c.end[0]-c.start[0]))+c.start[0],10),255),0)+","+Math.max(Math.min(parseInt((c.pos*(c.end[1]-c.start[1]))+c.start[1],10),255),0)+","+Math.max(Math.min(parseInt((c.pos*(c.end[2]-c.start[2]))+c.start[2],10),255),0)+")"}});function getRGB(b){var a;if(b&&b.constructor==Array&&b.length==3){return b}if(a=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(b)){return[parseInt(a[1],10),parseInt(a[2],10),parseInt(a[3],10)]}if(a=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(b)){return[parseFloat(a[1])*2.55,parseFloat(a[2])*2.55,parseFloat(a[3])*2.55]}if(a=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(b)){return[parseInt(a[1],16),parseInt(a[2],16),parseInt(a[3],16)]}if(a=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(b)){return[parseInt(a[1]+a[1],16),parseInt(a[2]+a[2],16),parseInt(a[3]+a[3],16)]}if(a=/rgba\(0, 0, 0, 0\)/.exec(b)){return colors.transparent}return colors[$.trim(b).toLowerCase()]}function getColor(c,a){var b;do{b=$.curCSS(c,a);if(b!=""&&b!="transparent"||$.nodeName(c,"body")){break}a="backgroundColor"}while(c=c.parentNode);return getRGB(b)};
你也可以使用CSS3过渡动画颜色,但它只支持现代浏览器。
a.test {
color: red;
-moz-transition-property: color; /* FF4+ */
-moz-transition-duration: 1s;
-webkit-transition-property: color; /* Saf3.2+, Chrome */
-webkit-transition-duration: 1s;
-o-transition-property: color; /* Opera 10.5+ */
-o-transition-duration: 1s;
-ms-transition-property: color; /* IE10? */
-ms-transition-duration: 1s;
transition-property: color; /* Standard */
transition-duration: 1s;
}
a.test:hover {
color: blue;
}
使用速记属性:
/* shorthand notation for transition properties */
/* transition: [transition-property] [transition-duration] [transition-timing-function] [transition-delay]; */
a.test {
color: red;
-moz-transition: color 1s;
-webkit-transition: color 1s;
-o-transition: color 1s;
-ms-transition: color 1s;
transition: color 1s;
}
a.test {
color: blue;
}
与常规的javascript转换不同,CSS3的转换是硬件加速的,因此更流畅。你可以使用Modernizr,看看浏览器是否支持CSS3转换,如果不支持,你可以使用jQuery作为退路:
if ( !cssTransitions() ) {
$(document).ready(function(){
$(".test").hover(function () {
$(this).stop().animate({ backgroundColor: "red" },500)
}, function() {
$(this).stop().animate({ backgroundColor: "blue" },500)}
);
});
}
记住在开始一个新的动画之前使用stop()来停止当前动画,否则当你过快地传递元素时,效果会持续闪烁一段时间。
试着使用它
-moz-transition: background .2s linear;
-webkit-transition: background .2s linear;
-o-transition: background .2s linear;
transition: background .2s linear;
color插件只有4kb,比UI库便宜多了。当然,你会想要使用一个像样的版本的插件,而不是那些bug百出的老东西,不能处理Safari和崩溃时,过渡太快。由于不提供缩小版本,您可能喜欢测试各种压缩器,并制作自己的最小版本。在这种情况下,YUI得到了最好的压缩,只需要2317字节,因为它是如此之小-下面是:
(function (d) {
d.each(["backgroundColor", "borderBottomColor", "borderLeftColor", "borderRightColor", "borderTopColor", "color", "outlineColor"], function (f, e) {
d.fx.step[e] = function (g) {
if (!g.colorInit) {
g.start = c(g.elem, e);
g.end = b(g.end);
g.colorInit = true
}
g.elem.style[e] = "rgb(" + [Math.max(Math.min(parseInt((g.pos * (g.end[0] - g.start[0])) + g.start[0]), 255), 0), Math.max(Math.min(parseInt((g.pos * (g.end[1] - g.start[1])) + g.start[1]), 255), 0), Math.max(Math.min(parseInt((g.pos * (g.end[2] - g.start[2])) + g.start[2]), 255), 0)].join(",") + ")"
}
});
function b(f) {
var e;
if (f && f.constructor == Array && f.length == 3) {
return f
}
if (e = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(f)) {
return [parseInt(e[1]), parseInt(e[2]), parseInt(e[3])]
}
if (e = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(f)) {
return [parseFloat(e[1]) * 2.55, parseFloat(e[2]) * 2.55, parseFloat(e[3]) * 2.55]
}
if (e = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(f)) {
return [parseInt(e[1], 16), parseInt(e[2], 16), parseInt(e[3], 16)]
}
if (e = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(f)) {
return [parseInt(e[1] + e[1], 16), parseInt(e[2] + e[2], 16), parseInt(e[3] + e[3], 16)]
}
if (e = /rgba\(0, 0, 0, 0\)/.exec(f)) {
return a.transparent
}
return a[d.trim(f).toLowerCase()]
}
function c(g, e) {
var f;
do {
f = d.css(g, e);
if (f != "" && f != "transparent" || d.nodeName(g, "body")) {
break
}
e = "backgroundColor"
} while (g = g.parentNode);
return b(f)
}
var a = {
aqua: [0, 255, 255],
azure: [240, 255, 255],
beige: [245, 245, 220],
black: [0, 0, 0],
blue: [0, 0, 255],
brown: [165, 42, 42],
cyan: [0, 255, 255],
darkblue: [0, 0, 139],
darkcyan: [0, 139, 139],
darkgrey: [169, 169, 169],
darkgreen: [0, 100, 0],
darkkhaki: [189, 183, 107],
darkmagenta: [139, 0, 139],
darkolivegreen: [85, 107, 47],
darkorange: [255, 140, 0],
darkorchid: [153, 50, 204],
darkred: [139, 0, 0],
darksalmon: [233, 150, 122],
darkviolet: [148, 0, 211],
fuchsia: [255, 0, 255],
gold: [255, 215, 0],
green: [0, 128, 0],
indigo: [75, 0, 130],
khaki: [240, 230, 140],
lightblue: [173, 216, 230],
lightcyan: [224, 255, 255],
lightgreen: [144, 238, 144],
lightgrey: [211, 211, 211],
lightpink: [255, 182, 193],
lightyellow: [255, 255, 224],
lime: [0, 255, 0],
magenta: [255, 0, 255],
maroon: [128, 0, 0],
navy: [0, 0, 128],
olive: [128, 128, 0],
orange: [255, 165, 0],
pink: [255, 192, 203],
purple: [128, 0, 128],
violet: [128, 0, 128],
red: [255, 0, 0],
silver: [192, 192, 192],
white: [255, 255, 255],
yellow: [255, 255, 0],
transparent: [255, 255, 255]
}
})(jQuery);
在没有jQueryUI的情况下使用动画效果更改背景颜色:
selector.css({
backgroundColor: "#555",
transition: "background-color 1.8s"
});
我也有同样的问题,并通过包含jQuery UI来修复它。以下是完整的脚本:
<!-- include Google's AJAX API loader -->
<script src="http://www.google.com/jsapi"></script>
<!-- load JQuery and UI from Google (need to use UI to animate colors) -->
<script type="text/javascript">
google.load("jqueryui", "1.5.2");
</script>
<script type="text/javascript">
$(document).ready(function() {
$('#menu ul li.item').hover(
function() {
$(this).stop().animate({backgroundColor:'#4E1402'}, 300);
}, function () {
$(this).stop().animate({backgroundColor:'#943D20'}, 100);
});
});
</script>