Created
December 23, 2016 13:39
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Parallax Background Image
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| // The plugin code | |
| (function($){ | |
| $.fn.parallax = function(options){ | |
| var $$ = $(this); | |
| offset = $$.offset(); | |
| var defaults = { | |
| "start": 0, | |
| "stop": offset.top + $$.height(), | |
| "coeff": 0.95 | |
| }; | |
| var opts = $.extend(defaults, options); | |
| var updateBgPos = function() { | |
| windowTop = $(window).scrollTop(); | |
| if((windowTop >= opts.start) && (windowTop <= opts.stop)) { | |
| newCoord = windowTop * opts.coeff; | |
| $$.css({ | |
| "background-position": "0 "+ newCoord + "px" | |
| }); | |
| } | |
| } | |
| return this.each(function(){ | |
| $(window).bind('scroll', updateBgPos); | |
| }); | |
| }; | |
| $("[data-parallax]").each(function(){ | |
| $(this).parallax({ coeff: $(this).data("parallax") }) | |
| }) | |
| })(jQuery); |
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