jQuery 动画背景颜色

2022-08-29 23:50:26

我正在尝试在鼠标悬停时使用jQuery对背景颜色的变化进行动画处理。

我已经检查了一些例子,我似乎做对了,它适用于其他属性,如fontSize,但使用背景颜色我得到和“无效属性”js错误。我正在使用的元素是一个 div。

$(".usercontent").mouseover(function() {
    $(this).animate({ backgroundColor: "olive" }, "slow");
});

有什么想法吗?


答案 1

颜色插件只有4kb,比UI库便宜得多。当然,你会想要使用一个体面的插件版本,而不是一些有缺陷的旧东西,它不能处理Safari,并且在过渡太快时崩溃。由于没有提供缩小版本,您可能希望测试各种压缩器并制作自己的最小版本。在这种情况下,YUI获得了最佳的压缩,只需要2317字节,并且由于它非常小 - 这里是:

(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);

答案 2

我遇到了同样的问题,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>