如何通过以下调用调用JavaScript函数来自动播放幻灯片?

时间:2016-05-27 14:47:22

标签: javascript jquery html css

我有一个滑块有三个幻灯片和一个四盒幻灯片。它将第一张图像分成四张,然后出现下一张图像。在单击下一个按钮时,当前图像会分解并显示下一个图像。它在点击上工作正常,但我想自动化图像的这种转换。我尝试使用javascript的setInterval函数,但它没有,工作正常。我有来自codrops的代码,我正在尝试将其整合到我的网站中。请帮助我,因为我是jquery的新手。我也看到了类似的帖子,但它没有用。 以下是HTML和js文件的代码。

的index.html

<!DOCTYPE html>
<html lang="en" class="no-js">
<head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge"> 
    <meta name="viewport" content="width=device-width, initial-scale=1"> 
    <title>Four Boxes Slideshow | Demo 2</title>
    <meta name="description" content="Four Boxes Slideshow: Recreating the background image slideshow seen on Atelier Serge Thoroval's website" />
    <meta name="keywords" content="background slideshow, boxes, background image, four panels, css, tutorial" />
    <meta name="author" content="Codrops" />
    <link rel="shortcut icon" href="../favicon.ico">
    <link href='http://fonts.googleapis.com/css?family=Raleway:200,400,600' rel='stylesheet' type='text/css'>
    <link rel="stylesheet" type="text/css" href="css/normalize.css" />
    <link rel="stylesheet" type="text/css" href="css/demo.css" />
        <link rel="stylesheet" type="text/css" href="css/component.css" />
    <script src="js/modernizr.custom.js"></script>
</head>
<body>
    <div class="container">

        <div id="boxgallery" class="boxgallery" data-effect="effect-2">
            <div class="panel"><img src="img/3.jpg" alt="Image 3"/></div>
            <div class="panel"><img src="img/4.jpg" alt="Image 4"/></div>
            <div class="panel"><img src="img/1.jpg" alt="Image 1"/></div>
            <div class="panel"><img src="img/2.jpg" alt="Image 2"/></div>
        </div>
        <header class="codrops-header">
            <h1>Four Boxes Slideshow <span>Recreating the background image slideshow seen on <a href="http://www.atelier-serge-thoraval.com/en/">Atelier Serge Thoroval's website</a></span></h1>
            <nav class="codrops-demos">
                <a href="index.html">Serge Thoroval</a>
                <a class="current-demo" href="index2.html">Lateral</a>
                <a href="index3.html">Fall</a>
            </nav>
        </header>
    </div><!-- /container -->
    <script src="js/classie.js"></script>
    <script src="js/boxesFx.js"></script>
    <script>
        new BoxesFx( document.getElementById( 'boxgallery' ) );
    </script>
</body>
</html>

boxesFx.js 这是需要查看的jquery代码。

;( function( window ) {

    'use strict';

    // based on http://responsejs.com/labs/dimensions/
    function getViewport(axis) {
        var client, inner;
        if( axis === 'x' ) {
            client = docElem['clientWidth'];
            inner = window['innerWidth'];
        }
        else if( axis === 'y' ) {
            client = docElem['clientHeight'];
            inner = window['innerHeight'];
        }

        return client < inner ? inner : client;
    }

    var docElem = window.document.documentElement,
        transEndEventNames = {
            'WebkitTransition': 'webkitTransitionEnd',
            'MozTransition': 'transitionend',
            'OTransition': 'oTransitionEnd',
            'msTransition': 'MSTransitionEnd',
            'transition': 'transitionend'
        },
        transEndEventName = transEndEventNames[ Modernizr.prefixed( 'transition' ) ],
        support = { transitions : Modernizr.csstransitions },
        win = { width : getViewport('x'), height : getViewport('y') };

    function extend( a, b ) {
        for( var key in b ) { 
            if( b.hasOwnProperty( key ) ) {
                a[key] = b[key];
            }
        }
        return a;
    }

    function BoxesFx( el, options ) {   
        this.el = el;
        this.options = extend( {}, this.options );
        extend( this.options, options );
        this._init();
    }

    BoxesFx.prototype.options = {}

    BoxesFx.prototype._init = function() {
        // set transforms configuration
        this._setTransforms();
        // which effect
        this.effect = this.el.getAttribute( 'data-effect' ) || 'effect-1';
        // check if animating
        this.isAnimating = false;
        // the panels
        this.panels = [].slice.call( this.el.querySelectorAll( '.panel' ) );
        // total number of panels (4 for this demo)
        //this.panelsCount = this.panels.length;
        this.panelsCount = 4;
        // current panel´s index
        this.current = 0;
        classie.add( this.panels[0], 'current' );
        // replace image with 4 divs, each including the image
        var self = this;
        this.panels.forEach( function( panel ) {
            var img = panel.querySelector( 'img' ), imgReplacement = '';
            for( var i = 0; i < self.panelsCount; ++i ) {
                imgReplacement += '<div class="bg-tile"><div class="bg-img"><img src="' + img.src + '" /></div></div>'
            }
            panel.removeChild( img );
            panel.innerHTML = imgReplacement + panel.innerHTML;
        } );
        // add navigation element
        this.nav = document.createElement( 'nav' );
        this.nav.innerHTML = '<span class="prev"><i></i></span><span class="next"><i></i></span>';
        this.el.appendChild( this.nav );
        // initialize events
        this._initEvents();
    }

    // set the transforms per effect
    // we have defined both the next and previous action transforms for each panel
    BoxesFx.prototype._setTransforms = function() {
        this.transforms = {
            'effect-1' : {
                'next' : [
                    'translate3d(0, ' + (win.height/2+10) + 'px, 0)', // transforms for 1 panel
                    'translate3d(-' + (win.width/2+10) + 'px, 0, 0)', // transforms for 2 panel
                    'translate3d(' + (win.width/2+10) + 'px, 0, 0)', // transforms for 3 panel
                    'translate3d(0, -' + (win.height/2+10) + 'px, 0)' // transforms for 4 panel
                ],
                'prev' : [
                    'translate3d(' + (win.width/2+10) + 'px, 0, 0)',
                    'translate3d(0, ' + (win.height/2+10) + 'px, 0)',
                    'translate3d(0, -' + (win.height/2+10) + 'px, 0)',
                    'translate3d(-' + (win.width/2+10) + 'px, 0, 0)'
                ]
            },
            'effect-2' : {
                'next' : [
                    'translate3d(-' + (win.width/2+10) + 'px, 0, 0)',
                    'translate3d(' + (win.width/2+10) + 'px, 0, 0)',
                    'translate3d(-' + (win.width/2+10) + 'px, 0, 0)',
                    'translate3d(' + (win.width/2+10) + 'px, 0, 0)'
                ],
                'prev' : [
                    'translate3d(0,-' + (win.height/2+10) + 'px, 0)',
                    'translate3d(0,-' + (win.height/2+10) + 'px, 0)',
                    'translate3d(0,' + (win.height/2+10) + 'px, 0)',
                    'translate3d(0,' + (win.height/2+10) + 'px, 0)'
                ]
            },
            'effect-3' : {
                'next' : [
                    'translate3d(0,' + (win.height/2+10) + 'px, 0)',
                    'translate3d(0,' + (win.height/2+10) + 'px, 0)',
                    'translate3d(0,' + (win.height/2+10) + 'px, 0)',
                    'translate3d(0,' + (win.height/2+10) + 'px, 0)'
                ],
                'prev' : [
                    'translate3d(0,-' + (win.height/2+10) + 'px, 0)',
                    'translate3d(0,-' + (win.height/2+10) + 'px, 0)',
                    'translate3d(0,-' + (win.height/2+10) + 'px, 0)',
                    'translate3d(0,-' + (win.height/2+10) + 'px, 0)'
                ]
            }
        };  
    }

    BoxesFx.prototype._initEvents = function() {
        var self = this, navctrls = this.nav.children;

        navctrls[0].addEventListener( 'click', function() { self._navigate('prev') } );

        navctrls[1].addEventListener( 'click', function() { self._navigate('next') } );

        window.addEventListener( 'resize', function() { self._resizeHandler(); } );
    }


    // goto next or previous slide
    BoxesFx.prototype._navigate = function( dir ) {
        if( this.isAnimating ) return false;
        this.isAnimating = true;

        var self = this, currentPanel = this.panels[ this.current ];

        if( dir === 'next' ) {
            this.current = this.current < this.panelsCount - 1 ? this.current + 1 : 0;          
        }
        else {
            this.current = this.current > 0 ? this.current - 1 : this.panelsCount - 1;
        }

        // next panel to be shown
        var nextPanel = this.panels[ this.current ];
        // add class active to the next panel to trigger its animation
        classie.add( nextPanel, 'active' );
        // apply the transforms to the current panel
        this._applyTransforms( currentPanel, dir );

        // let´s track the number of transitions ended per panel
        var cntTransTotal = 0,

            // transition end event function
            onEndTransitionFn = function( ev ) {
                if( ev && !classie.has( ev.target, 'bg-img' ) ) return false;

                // return if not all panel transitions ended
                ++cntTransTotal;
                if( cntTransTotal < self.panelsCount ) return false;

                if( support.transitions ) {
                    this.removeEventListener( transEndEventName, onEndTransitionFn );
                }

                // remove current class from current panel and add it to the next one
                classie.remove( currentPanel, 'current' );
                classie.add( nextPanel, 'current' );
                // reset transforms for the currentPanel
                self._resetTransforms( currentPanel );
                // remove class active
                classie.remove( nextPanel, 'active' );
                self.isAnimating = false;
            };

        if( support.transitions ) {
            currentPanel.addEventListener( transEndEventName, onEndTransitionFn );
        }
        else {
            onEndTransitionFn();
        }
    }

    BoxesFx.prototype._applyTransforms = function( panel, dir ) {
        var self = this;
        [].slice.call( panel.querySelectorAll( 'div.bg-img' ) ).forEach( function( tile, pos ) {
            tile.style.WebkitTransform = self.transforms[self.effect][dir][pos];
            tile.style.transform = self.transforms[self.effect][dir][pos];
        } );
    }

    BoxesFx.prototype._resetTransforms = function( panel ) {
        [].slice.call( panel.querySelectorAll( 'div.bg-img' ) ).forEach( function( tile ) {
            tile.style.WebkitTransform = 'none';
            tile.style.transform = 'none';
        } );
    }

    BoxesFx.prototype._resizeHandler = function() {
        var self = this;
        function delayed() {
            self._resize();
            self._resizeTimeout = null;
        }
        if ( this._resizeTimeout ) {
            clearTimeout( this._resizeTimeout );
        }
        this._resizeTimeout = setTimeout( delayed, 50 );
    }

    BoxesFx.prototype._resize = function() {
        win.width = getViewport('x');
        win.height = getViewport('y');
        this._setTransforms();
    }

    // add to global namespace
    window.BoxesFx = BoxesFx;

} )( window );

1 个答案:

答案 0 :(得分:2)

BoxesFx.prototype._initEvents = function(){...}添加setInterval(function(){ self._navigate('next') }, 4000);。这将在每4秒后滑动您的图像。