我是全新的jQuery和有一些使用原型的经验。在Prototype中,有一个方法来“闪现”一个元素。简单地用另一种颜色突出它,然后让它变回正常,这样用户的眼睛就会被吸引到它上面。jQuery中有这样的方法吗?我看到淡出,淡出,和动画,但我没有看到任何像“闪光”。也许这三个中的一个可以与适当的输入一起使用?


当前回答

有一个解决动画背景错误的方法。这个要点包括一个简单的高亮方法及其使用的示例。

/* BEGIN jquery color */
  (function(jQuery){jQuery.each(['backgroundColor','borderBottomColor','borderLeftColor','borderRightColor','borderTopColor','color','outlineColor'],function(i,attr){jQuery.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]),255),0),Math.max(Math.min(parseInt((fx.pos*(fx.end[1]-fx.start[1]))+fx.start[1]),255),0),Math.max(Math.min(parseInt((fx.pos*(fx.end[2]-fx.start[2]))+fx.start[2]),255),0)].join(",")+")";}});function getRGB(color){var result;if(color&&color.constructor==Array&&color.length==3)
  return color;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]),parseInt(result[2]),parseInt(result[3])];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];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)];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)];if(result=/rgba\(0, 0, 0, 0\)/.exec(color))
  return colors['transparent'];return colors[jQuery.trim(color).toLowerCase()];}
  function getColor(elem,attr){var color;do{color=jQuery.curCSS(elem,attr);if(color!=''&&color!='transparent'||jQuery.nodeName(elem,"body"))
  break;attr="backgroundColor";}while(elem=elem.parentNode);return getRGB(color);};var colors={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);
  /* END jquery color */


  /* BEGIN highlight */
  jQuery(function() {
    $.fn.highlight = function(options) {
      options = (options) ? options : {start_color:"#ff0",end_color:"#fff",delay:1500};
      $(this).each(function() {
        $(this).stop().css({"background-color":options.start_color}).animate({"background-color":options.end_color},options.delay);
      });
    }
  });
  /* END highlight */

  /* BEGIN highlight example */
  $(".some-elements").highlight();
  /* END highlight example */

https://gist.github.com/1068231

其他回答

不幸的是,上面的答案需要JQuery UI。http://api.jquery.com/animate/

下面是一个普通的JQuery解决方案

http://jsfiddle.net/EfKBg/

JS

var flash = "<div class='flash'></div>";
$(".hello").prepend(flash);
$('.flash').show().fadeOut('slow');

CSS

.flash {
    background-color: yellow;
    display: none;
    position: absolute;
    width: 100%;
    height: 100%;
}

HTML

<div class="hello">Hello World!</div>

这可能是一个最新的答案,而且更简短,因为自从这篇文章以来,事情已经有所巩固。需要jquery-ui-effect-highlight。

$("div").click(function () {
  $(this).effect("highlight", {}, 3000);
});

http://docs.jquery.com/UI/Effects/Highlight

你可以进一步扩展Desheng Li的方法,允许迭代计数进行多次闪光,如下所示:

// Extend jquery with flashing for elements
$.fn.flash = function(duration, iterations) {
    duration = duration || 1000; // Default to 1 second
    iterations = iterations || 1; // Default to 1 iteration
    var iterationDuration = Math.floor(duration / iterations);

    for (var i = 0; i < iterations; i++) {
        this.fadeOut(iterationDuration).fadeIn(iterationDuration);
    }
    return this;
}

然后你可以调用方法的时间和闪光的数量:

$("#someElementId").flash(1000, 4); // Flash 4 times over a period of 1 second

有一个解决动画背景错误的方法。这个要点包括一个简单的高亮方法及其使用的示例。

/* BEGIN jquery color */
  (function(jQuery){jQuery.each(['backgroundColor','borderBottomColor','borderLeftColor','borderRightColor','borderTopColor','color','outlineColor'],function(i,attr){jQuery.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]),255),0),Math.max(Math.min(parseInt((fx.pos*(fx.end[1]-fx.start[1]))+fx.start[1]),255),0),Math.max(Math.min(parseInt((fx.pos*(fx.end[2]-fx.start[2]))+fx.start[2]),255),0)].join(",")+")";}});function getRGB(color){var result;if(color&&color.constructor==Array&&color.length==3)
  return color;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]),parseInt(result[2]),parseInt(result[3])];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];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)];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)];if(result=/rgba\(0, 0, 0, 0\)/.exec(color))
  return colors['transparent'];return colors[jQuery.trim(color).toLowerCase()];}
  function getColor(elem,attr){var color;do{color=jQuery.curCSS(elem,attr);if(color!=''&&color!='transparent'||jQuery.nodeName(elem,"body"))
  break;attr="backgroundColor";}while(elem=elem.parentNode);return getRGB(color);};var colors={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);
  /* END jquery color */


  /* BEGIN highlight */
  jQuery(function() {
    $.fn.highlight = function(options) {
      options = (options) ? options : {start_color:"#ff0",end_color:"#fff",delay:1500};
      $(this).each(function() {
        $(this).stop().css({"background-color":options.start_color}).animate({"background-color":options.end_color},options.delay);
      });
    }
  });
  /* END highlight */

  /* BEGIN highlight example */
  $(".some-elements").highlight();
  /* END highlight example */

https://gist.github.com/1068231

直接jquery,没有插件。它会闪烁指定的次数,在闪烁时改变背景颜色,然后再将其改变回来。

function blink(target, count, blinkspeed, bc) {
    let promises=[];
    const b=target.css(`background-color`);
    target.css(`background-color`, bc||b);
    for (i=1; i<count; i++) {
            const blink = target.fadeTo(blinkspeed||100, .3).fadeTo(blinkspeed||100, 1.0);
            promises.push(blink);
    }
    // wait for all the blinking to finish before changing the background color back
    $.when.apply(null, promises).done(function() {
            target.css(`background-color`, b);
    });
    promises=undefined;
}

例子:

blink($(`.alert-danger`), 5, 200, `yellow`);