关于前端JS走马灯(marquee)总结
方案一：
<marquee width="360" scrolldelay="20" scrollamount="2" onclick="openZoosUrl();return false">这是走马灯实例，这是走马灯实例，这是走马灯实例...</marquee>
方案二：构建jquery插件
走马灯插件：http://aamirafridi.com/jquery/jquery-marquee-plugin.js
(function($) {
$.fn.marquee = function(options) {
return this.each(function() {
var o = $.extend({}, $.fn.marquee.defaults, options), $this = $(this), $marqueeWrapper, containerWidth, animationCss, verticalDir, elWidth, loopCount = 3, playState = 'animation-play-state', css3AnimationIsSupported = !1, _prefixedEvent = function(element, type, callback) {
var pfx = ["webkit", "moz", "MS", "o", ""];
for (var p = 0; p < pfx.length; p++) {
if (!pfx[p])
type = type.toLowerCase();
element.addEventListener(pfx[p] + type, callback, !1)
}
}, _objToString = function(obj) {
var tabjson = [];
for (var p in obj) {
if (obj.hasOwnProperty(p)) {
tabjson.push(p + ':' + obj[p])
}
}
tabjson.push();
return '{' + tabjson.join(',') + '}'
}, _startAnimationWithDelay = function() {
$this.timer = setTimeout(animate, o.delayBeforeStart)
}, methods = {
pause: function() {
if (css3AnimationIsSupported && o.allowCss3Support) {
$marqueeWrapper.css(playState, 'paused')
} else {
if ($.fn.pause) {
$marqueeWrapper.pause()
}
}
$this.data('runningStatus', 'paused');
$this.trigger('paused')
},
resume: function() {
if (css3AnimationIsSupported && o.allowCss3Support) {
$marqueeWrapper.css(playState, 'running')
} else {
if ($.fn.resume) {
$marqueeWrapper.resume()
}
}
$this.data('runningStatus', 'resumed');
$this.trigger('resumed')
},
toggle: function() {
methods[$this.data('runningStatus') == 'resumed' ? 'pause' : 'resume']()
},
destroy: function() {
clearTimeout($this.timer);
$this.find("*").addBack().off();
$this.html($this.find('.js-marquee:first').html())
}
};
if (typeof options === 'string') {
if ($.isFunction(methods[options])) {
if (!$marqueeWrapper) {
$marqueeWrapper = $this.find('.js-marquee-wrapper')
}
if ($this.data('css3AnimationIsSupported') === !0) {
css3AnimationIsSupported = !0
}
methods[options]()
}
return
}
var dataAttributes = {}, attr;
$.each(o, function(key, value) {
attr = $this.attr('data-' + key);
if (typeof attr !== 'undefined') {
switch (attr) {
case 'true':
attr = !0;
break;
case 'false':
attr = !1;
break
}
o[key] = attr
}
});
if (o.speed) {
o.duration = parseInt($this.width(), 10) / o.speed * 1000
}
verticalDir = o.direction == 'up' || o.direction == 'down';
o.gap = o.duplicated ? parseInt(o.gap) : 0;
$this.wrapInner('<div class="js-marquee"></div>');
var $el = $this.find('.js-marquee').css({
'margin-right': o.gap,
'float': 'left'
});
if (o.duplicated) {
$el.clone(!0).appendTo($this)
}
$this.wrapInner('<div style="width:100000px" class="js-marquee-wrapper"></div>');
$marqueeWrapper = $this.find('.js-marquee-wrapper');
if (verticalDir) {
var containerHeight = $this.height();
$marqueeWrapper.removeAttr('style');
$this.height(containerHeight);
$this.find('.js-marquee').css({
'float': 'none',
'margin-bottom': o.gap,
'margin-right': 0
});
if (o.duplicated)
$this.find('.js-marquee:last').css({
'margin-bottom': 0
});
var elHeight = $this.find('.js-marquee:first').height() + o.gap;
if (o.startVisible && !o.duplicated) {
o._completeDuration = ((parseInt(elHeight, 10) + parseInt(containerHeight, 10)) / parseInt(containerHeight, 10)) * o.duration;
o.duration = (parseInt(elHeight, 10) / parseInt(containerHeight, 10)) * o.duration
} else {
o.duration = ((parseInt(elHeight, 10) + parseInt(containerHeight, 10)) / parseInt(containerHeight, 10)) * o.duration
}
} else {
elWidth = $this.find('.js-marquee:first').width() + o.gap;
containerWidth = $this.width();
if (o.startVisible && !o.duplicated) {
o._completeDuration = ((parseInt(elWidth, 10) + parseInt(containerWidth, 10)) / parseInt(containerWidth, 10)) * o.duration;
o.duration = (parseInt(elWidth, 10) / parseInt(containerWidth, 10)) * o.duration
} else {
o.duration = ((parseInt(elWidth, 10) + parseInt(containerWidth, 10)) / parseInt(containerWidth, 10)) * o.duration
}
}
if (o.duplicated) {
o.duration = o.duration / 2
}
if (o.allowCss3Support) {
var elm = document.body || document.createElement('div')
, animationName = 'marqueeAnimation-' + Math.floor(Math.random() * 10000000)
, domPrefixes = 'Webkit Moz O ms Khtml'.split(' ')
, animationString = 'animation'
, animationCss3Str = ''
, keyframeString = '';
if (elm.style.animation !== undefined) {
keyframeString = '@keyframes ' + animationName + ' ';
css3AnimationIsSupported = !0
}
if (css3AnimationIsSupported === !1) {
for (var i = 0; i < domPrefixes.length; i++) {
if (elm.style[domPrefixes[i] + 'AnimationName'] !== undefined) {
var prefix = '-' + domPrefixes[i].toLowerCase() + '-';
animationString = prefix + animationString;
playState = prefix + playState;
keyframeString = '@' + prefix + 'keyframes ' + animationName + ' ';
css3AnimationIsSupported = !0;
break
}
}
}
if (css3AnimationIsSupported) {
animationCss3Str = animationName + ' ' + o.duration / 1000 + 's ' + o.delayBeforeStart / 1000 + 's infinite ' + o.css3easing;
$this.data('css3AnimationIsSupported', !0)
}
}
var _rePositionVertically = function() {
$marqueeWrapper.css('transform', 'translateY(' + (o.direction == 'up' ? containerHeight + 'px' : '-' + elHeight + 'px') + ')')
}
, _rePositionHorizontally = function() {
$marqueeWrapper.css('transform', 'translateX(' + (o.direction == 'left' ? containerWidth + 'px' : '-' + elWidth + 'px') + ')')
};
if (o.duplicated) {
if (verticalDir) {
if (o.startVisible) {
$marqueeWrapper.css('transform', 'translateY(0)')
} else {
$marqueeWrapper.css('transform', 'translateY(' + (o.direction == 'up' ? containerHeight + 'px' : '-' + ((elHeight * 2) - o.gap) + 'px') + ')')
}
} else {
if (o.startVisible) {
$marqueeWrapper.css('transform', 'translateX(0)')
} else {
$marqueeWrapper.css('transform', 'translateX(' + (o.direction == 'left' ? containerWidth + 'px' : '-' + ((elWidth * 2) - o.gap) + 'px') + ')')
}
}
if (!o.startVisible) {
loopCount = 1
}
} else if (o.startVisible) {
loopCount = 2
} else {
if (verticalDir) {
_rePositionVertically()
} else {
_rePositionHorizontally()
}
}
var animate = function() {
if (o.duplicated) {
if (loopCount === 1) {
o._originalDuration = o.duration;
if (verticalDir) {
o.duration = o.direction == 'up' ? o.duration + (containerHeight / ((elHeight) / o.duration)) : o.duration * 2
} else {
o.duration = o.direction == 'left' ? o.duration + (containerWidth / ((elWidth) / o.duration)) : o.duration * 2
}
if (animationCss3Str) {
animationCss3Str = animationName + ' ' + o.duration / 1000 + 's ' + o.delayBeforeStart / 1000 + 's ' + o.css3easing
}
loopCount++
} else if (loopCount === 2) {
o.duration = o._originalDuration;
if (animationCss3Str) {
animationName = animationName + '0';
keyframeString = $.trim(keyframeString) + '0 ';
animationCss3Str = animationName + ' ' + o.duration / 1000 + 's 0s infinite ' + o.css3easing
}
loopCount++
}
}
if (verticalDir) {
if (o.duplicated) {
if (loopCount > 2) {
$marqueeWrapper.css('transform', 'translateY(' + (o.direction == 'up' ? 0 : '-' + elHeight + 'px') + ')')
}
animationCss = {
'transform': 'translateY(' + (o.direction == 'up' ? '-' + elHeight + 'px' : 0) + ')'
}
} else if (o.startVisible) {
if (loopCount === 2) {
if (animationCss3Str) {
animationCss3Str = animationName + ' ' + o.duration / 1000 + 's ' + o.delayBeforeStart / 1000 + 's ' + o.css3easing
}
animationCss = {
'transform': 'translateY(' + (o.direction == 'up' ? '-' + elHeight + 'px' : containerHeight + 'px') + ')'
};
loopCount++
} else if (loopCount === 3) {
o.duration = o._completeDuration;
if (animationCss3Str) {
animationName = animationName + '0';
keyframeString = $.trim(keyframeString) + '0 ';
animationCss3Str = animationName + ' ' + o.duration / 1000 + 's 0s infinite ' + o.css3easing
}
_rePositionVertically()
}
} else {
_rePositionVertically();
animationCss = {
'transform': 'translateY(' + (o.direction == 'up' ? '-' + ($marqueeWrapper.height()) + 'px' : containerHeight + 'px') + ')'
}
}
} else {
if (o.duplicated) {
if (loopCount > 2) {
$marqueeWrapper.css('transform', 'translateX(' + (o.direction == 'left' ? 0 : '-' + elWidth + 'px') + ')')
}
animationCss = {
'transform': 'translateX(' + (o.direction == 'left' ? '-' + elWidth + 'px' : 0) + ')'
}
} else if (o.startVisible) {
if (loopCount === 2) {
if (animationCss3Str) {
animationCss3Str = animationName + ' ' + o.duration / 1000 + 's ' + o.delayBeforeStart / 1000 + 's ' + o.css3easing
}
animationCss = {
'transform': 'translateX(' + (o.direction == 'left' ? '-' + elWidth + 'px' : containerWidth + 'px') + ')'
};
loopCount++
} else if (loopCount === 3) {
o.duration = o._completeDuration;
if (animationCss3Str) {
animationName = animationName + '0';
keyframeString = $.trim(keyframeString) + '0 ';
animationCss3Str = animationName + ' ' + o.duration / 1000 + 's 0s infinite ' + o.css3easing
}
_rePositionHorizontally()
}
} else {
_rePositionHorizontally();
animationCss = {
'transform': 'translateX(' + (o.direction == 'left' ? '-' + elWidth + 'px' : containerWidth + 'px') + ')'
}
}
}
$this.trigger('beforeStarting');
if (css3AnimationIsSupported) {
$marqueeWrapper.css(animationString, animationCss3Str);
var keyframeCss = keyframeString + ' { 100% ' + _objToString(animationCss) + '}'
, $styles = $marqueeWrapper.find('style');
if ($styles.length !== 0) {
$styles.filter(":last").html(keyframeCss)
} else {
$('head').append('<style>' + keyframeCss + '</style>')
}
_prefixedEvent($marqueeWrapper[0], "AnimationIteration", function() {
$this.trigger('finished')
});
_prefixedEvent($marqueeWrapper[0], "AnimationEnd", function() {
animate();
$this.trigger('finished')
})
} else {
$marqueeWrapper.animate(animationCss, o.duration, o.easing, function() {
$this.trigger('finished');
if (o.pauseOnCycle) {
_startAnimationWithDelay()
} else {
animate()
}
})
}
$this.data('runningStatus', 'resumed')
};
$this.on('pause', methods.pause);
$this.on('resume', methods.resume);
if (o.pauseOnHover) {
$this.on('mouseenter', methods.pause);
$this.on('mouseleave', methods.resume)
}
if (css3AnimationIsSupported && o.allowCss3Support) {
animate()
} else {
_startAnimationWithDelay()
}
})
}
;
$.fn.marquee.defaults = {
allowCss3Support: !0,
css3easing: 'linear',
easing: 'linear',
delayBeforeStart: 1000,
direction: 'left',
duplicated: !1,
duration: 5000,
speed: 0,
gap: 20,
pauseOnCycle: !1,
pauseOnHover: !1,
startVisible: !1
}
}
)(jQuery)
如何编写html：
<div class="marquee">
<div class="js-marquee-wrapper">
<div class="js-marquee">XXXXXX</div>
</div>
</div>
如何创建实例：
$(".marquee").marquee({
speed: 20,
startVisible: !0,
gap: 50,
delayBeforeStart: 1e3,
duplicated: !0
});
