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Jacob Thornton
18 lines
2.0 KiB
JavaScript
18 lines
2.0 KiB
JavaScript
/* =============================================================
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* bootstrap-scrollspy.js v1.4.0
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* http://twitter.github.com/bootstrap/javascript.html#scrollspy
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* =============================================================
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* Copyright 2011 Twitter, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* ============================================================== */!function(a){function c(c,d){var e=a.proxy(this.processScroll,this);this.$topbar=a(c),this.selector=d||"li > a",this.refresh(),this.$topbar.delegate(this.selector,"click",e),b.scroll(e),this.processScroll()}"use strict";var b=a(window);c.prototype={refresh:function(){this.targets=this.$topbar.find(this.selector).map(function(){var b=a(this).attr("href");return/^#\w/.test(b)&&a(b).length?b:null}),this.offsets=a.map(this.targets,function(b){return a(b).offset().top})},processScroll:function(){var a=b.scrollTop()+10,c=this.offsets,d=this.targets,e=this.activeTarget,f;for(f=c.length;f--;)e!=d[f]&&a>=c[f]&&(!c[f+1]||a<=c[f+1])&&this.activateButton(d[f])},activateButton:function(a){this.activeTarget=a,this.$topbar.find(this.selector).parent(".active").removeClass("active"),this.$topbar.find(this.selector+'[href="'+a+'"]').parent("li").addClass("active")}},a.fn.scrollSpy=function(b){var d=this.data("scrollspy");return d?b===!0?d:(typeof b=="string"&&d[b](),this):this.each(function(){a(this).data("scrollspy",new c(this,b))})},a(document).ready(function(){a("body").scrollSpy("[data-scrollspy] li > a")})}(window.jQuery||window.ender); |