Compile LESS as it's typed on the page.
A Pen by Derek Wheelden on CodePen.
Created
January 28, 2014 04:26
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A Pen by Derek Wheelden.
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| <div class="container"> | |
| <h1>Live LESS Compiling</h1> | |
| <p>Just go ahead and type right in there</p> | |
| <textarea> | |
| // Variables | |
| @background: hsl(10, 70%, 10%); | |
| @editor-font: consolas, monospace; | |
| // Styles | |
| body { | |
| background: lighten(@background, 20%); | |
| } | |
| textarea { | |
| font-family: @editor-font; | |
| font-size: 0.7em; | |
| } | |
| </textarea> | |
| </div> |
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| var lessOutput, lessRaw, | |
| appendStyle = $('<style />', { | |
| id : 'less' | |
| }).appendTo('head'), | |
| parser = new(less.Parser)(), | |
| CssCompile = { | |
| typingTimer: null, | |
| doneTypingInterval: 500, | |
| $style: $('head style#less'), | |
| init: function() { | |
| var _this = CssCompile; | |
| lessRaw = $('textarea').val(); | |
| if (lessRaw) _this.compile(lessRaw); | |
| }, | |
| compile: function(raw) { | |
| var _this = CssCompile; | |
| parser.parse(raw, function(err, css){ | |
| if (err) { | |
| lessOutput = err; | |
| // Do some error handling | |
| } | |
| if (css) { | |
| lessOutput = css.toCSS({ compress: true }); | |
| _this.$style.text(lessOutput); | |
| } | |
| }); | |
| } | |
| }; | |
| CssCompile.init(); | |
| $('textarea').keyup(function () { | |
| clearTimeout(CssCompile.typingTimer); | |
| CssCompile.typingTimer = setTimeout(CssCompile.init, CssCompile.doneTypingInterval); | |
| }); |
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| @import "compass"; | |
| textarea { | |
| display: block; | |
| width: 100%; | |
| height: 16em; | |
| margin: 1em auto; | |
| padding: 1em; | |
| border: none; | |
| } | |
| /** PAGE STYLES **/ | |
| @import url(http://fonts.googleapis.com/css?family=Lato:300,700|Oswald); | |
| html, body { width: 100%; height: 100%; } | |
| html { font-size: 62.5%; } | |
| body { | |
| font-family: 'Lato', sans-serif; | |
| font-size: 2em; | |
| line-height: 1.5; | |
| color: white; | |
| } | |
| .container { | |
| width: 45em; | |
| margin: 0 auto; | |
| } | |
| h1 { | |
| margin: 0; | |
| font-family: 'Oswald'; | |
| text-transform: uppercase; | |
| text-align: center; | |
| } | |
| p { | |
| margin: 0; | |
| text-align: center; | |
| } |
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