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August 30, 2019 22:39
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full screen background image of any dimension
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| .bg { | |
| display: block; | |
| height: 100%; | |
| left: 0; | |
| overflow: hidden; | |
| position: fixed; | |
| top: 0; | |
| width: 100%; | |
| z-index: 0; | |
| } |
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| var bg = { | |
| settings : { | |
| imageW : 1600, | |
| imageH : 1608 | |
| }, | |
| $img : false, | |
| init: function () { | |
| this.$wrap = $('body'); | |
| this.$img = $('.bg').children('img') | |
| this.ratio = this.settings.imageW / this.settings.imageH; | |
| this.setBg(); | |
| this.$wrap.on('resize', bg.setBg()); | |
| }, | |
| setBg : function() { | |
| this.bgRatio = this.$wrap.width() / this.$wrap.height(); | |
| if (bg.bgRatio < bg.ratio) { | |
| this.$img.css({ | |
| 'height': '100%', | |
| 'width': 'auto' | |
| }); | |
| } else { | |
| this.$img.css({ | |
| 'width': '100%', | |
| 'height': 'auto' | |
| }); | |
| } | |
| } | |
| } |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <link type="text/css" rel="stylesheet" href="bg.css"> | |
| <script src="bg.js" type="text/javascript"> | |
| </head> | |
| <body> | |
| <div class="bg"> | |
| <img src="/images/bg.jpg" height="1608" width="1600" alt="Background"> | |
| </div> | |
| </body> | |
| </html> | |
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