Created
November 21, 2012 18:30
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My parallax secret
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| /*########################################################################*/ | |
| /*###### using jQuery selector for a fast/cross-browser resolution #######*/ | |
| /*########################################################################*/ | |
| var totalAreas = 6, // this value is obviously arbitrary | |
| winH = $(window).height, // the window height | |
| top = $(window).scrollTop(), // the current scroll value | |
| maxScroll = $(document).height() - winH, // the maximum scroll value | |
| scrollPerc = top/maxScroll, // the current scroll percentage | |
| areaPercent = 0; // init variable | |
| // just logging the percentage, from here is up to you | |
| function logPercent(index, percent) { | |
| console.log("Area index: "+index+" is "+percent+"%. Calculate proportions!"); | |
| } | |
| /* calculate the percentage from each area */ | |
| for(var i = 0; i < totalAreas; i++){//######### here is the catch: the percent of the total scroll times the total of areas minus the current index, plus one :) | |
| areaPercent = 1 + ((scrollPerc * totalAreas) - i); | |
| logPercent(i, areaPercent); // loggin result | |
| } | |
| //###################################################################### | |
| //##### PS: Assuming the areas has the same height, the window height |
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