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css超出部分省略号_css js 制作折叠菜单代码
css超出部分省略号_css js 制作折叠菜单代码
发布时间:2017-10-05
【www.gdgbn.com--flex】
提示:您可以先修改部分代码再运行
<script> var Spry; if (!Spry) Spry = {}; if (!Spry.Widget) Spry.Widget = {}; Spry.Widget.Accordion = function(element, opts) { this.element = this.getElement(element); this.defaultPanel = 0; this.hoverClass = "AccordionPanelTabHover"; this.openClass = "AccordionPanelOpen"; this.closedClass = "AccordionPanelClosed"; this.focusedClass = "AccordionFocused"; this.enableAnimation = true; this.enableKeyboardNavigation = true; this.currentPanel = null; this.animator = null; this.hasFocus = null; this.duration = 500; this.previousPanelKeyCode = Spry.Widget.Accordion.KEY_UP; this.nextPanelKeyCode = Spry.Widget.Accordion.KEY_DOWN; this.useFixedPanelHeights = true; this.fixedPanelHeight = 0; Spry.Widget.Accordion.setOptions(this, opts, true); if (Spry.Widget.Accordion.onloadDidFire) this.attachBehaviors(); else Spry.Widget.Accordion.loadQueue.push(this); }; Spry.Widget.Accordion.onloadDidFire = false; Spry.Widget.Accordion.loadQueue = []; Spry.Widget.Accordion.addLoadListener = function(handler) { if (typeof window.addEventListener != "undefined") window.addEventListener("load", handler, false); else if (typeof document.addEventListener != "undefined") document.addEventListener("load", handler, false); else if (typeof window.attachEvent != "undefined") window.attachEvent("onload", handler); }; Spry.Widget.Accordion.processLoadQueue = function(handler) { Spry.Widget.Accordion.onloadDidFire = true; var q = Spry.Widget.Accordion.loadQueue; var qlen = q.length; for (var i = 0; i < qlen; i++) q[i].attachBehaviors(); }; Spry.Widget.Accordion.addLoadListener(Spry.Widget.Accordion.processLoadQueue); Spry.Widget.Accordion.prototype.getElement = function(ele) { if (ele && typeof ele == "string") return document.getElementById(ele); return ele; }; Spry.Widget.Accordion.prototype.addClassName = function(ele, className) { if (!ele || !className || (ele.className && ele.className.search(new RegExp("b" + className + "b")) != -1)) return; ele.className += (ele.className ? " " : "") + className; }; Spry.Widget.Accordion.prototype.removeClassName = function(ele, className) { if (!ele || !className || (ele.className && ele.className.search(new RegExp("b" + className + "b")) == -1)) return; ele.className = ele.className.replace(new RegExp("s*b" + className + "b", "g"), ""); }; Spry.Widget.Accordion.setOptions = function(obj, optionsObj, ignoreUndefinedProps) { if (!optionsObj) return; for (var optionName in optionsObj) { if (ignoreUndefinedProps && optionsObj[optionName] == undefined) continue; obj[optionName] = optionsObj[optionName]; } }; Spry.Widget.Accordion.prototype.onPanelTabMouseOver = function(panel) { if (panel) this.addClassName(this.getPanelTab(panel), this.hoverClass); }; Spry.Widget.Accordion.prototype.onPanelTabMouseOut = function(panel) { if (panel) this.removeClassName(this.getPanelTab(panel), this.hoverClass); }; Spry.Widget.Accordion.prototype.openPanel = function(panel) { var panelA = this.currentPanel; var panelB = panel; if (!panelB || panelA == panelB) return; var contentA; if( panelA ) contentA = this.getPanelContent(panelA); var contentB = this.getPanelContent(panelB); if (! contentB) return; if (this.useFixedPanelHeights && !this.fixedPanelHeight) { this.fixedPanelHeight = (contentA.offsetHeight) ? contentA.offsetHeight : contentA.scrollHeight; } if (this.enableAnimation) { if (this.animator) this.animator.stop(); this.animator = new Spry.Widget.Accordion.PanelAnimator(this, panelB, { duration: this.duration }); this.animator.start(); } else { if(contentA) contentA.style.height = "0px"; contentB.style.height = (this.useFixedPanelHeights ? this.fixedPanelHeight : contentB.scrollHeight) + "px"; } if(panelA) { this.removeClassName(panelA, this.openClass); this.addClassName(panelA, this.closedClass); } this.removeClassName(panelB, this.closedClass); this.addClassName(panelB, this.openClass); this.currentPanel = panelB; }; Spry.Widget.Accordion.prototype.openNextPanel = function() { var panels = this.getPanels(); var curPanelIndex = this.getCurrentPanelIndex(); if( panels && curPanelIndex >= 0 && (curPanelIndex+1) < panels.length ) this.openPanel(panels[curPanelIndex+1]); }; Spry.Widget.Accordion.prototype.openPreviousPanel = function() { var panels = this.getPanels(); var curPanelIndex = this.getCurrentPanelIndex(); if( panels && curPanelIndex > 0 && curPanelIndex < panels.length ) this.openPanel(panels[curPanelIndex-1]); }; Spry.Widget.Accordion.prototype.openFirstPanel = function() { var panels = this.getPanels(); if( panels ) this.openPanel(panels[0]); }; Spry.Widget.Accordion.prototype.openLastPanel = function() { var panels = this.getPanels(); if( panels ) this.openPanel(panels[panels.length-1]); }; Spry.Widget.Accordion.prototype.onPanelClick = function(panel) { // if (this.enableKeyboardNavigation) // this.element.focus(); if (panel != this.currentPanel) this.openPanel(panel); this.focus(); }; Spry.Widget.Accordion.prototype.onFocus = function(e) { // this.element.focus(); this.hasFocus = true; this.addClassName(this.element, this.focusedClass); }; Spry.Widget.Accordion.prototype.onBlur = function(e) { // this.element.blur(); this.hasFocus = false; this.removeClassName(this.element, this.focusedClass); }; Spry.Widget.Accordion.KEY_UP = 38; Spry.Widget.Accordion.KEY_DOWN = 40; Spry.Widget.Accordion.prototype.onKeyDown = function(e) { var key = e.keyCode; if (!this.hasFocus || (key != this.previousPanelKeyCode && key != this.nextPanelKeyCode)) return true; var panels = this.getPanels(); if (!panels || panels.length < 1) return false; var currentPanel = this.currentPanel ? this.currentPanel : panels[0]; var nextPanel = (key == this.nextPanelKeyCode) ? currentPanel.nextSib
ling
: currentPanel.previousSib
ling
; while (nextPanel) { if (nextPanel.nodeType == 1 /* Node.ELEMENT_NODE */) break; nextPanel = (key == this.nextPanelKeyCode) ? nextPanel.nextSibling : nextPanel.previousSibling; } if (nextPanel && currentPanel != nextPanel) this.openPanel(nextPanel); if (e.stopPropagation) e.stopPropagation(); if (e.preventDefault) e.preventDefault(); return false; }; Spry.Widget.Accordion.prototype.attachPanelHandlers = function(panel) { if (!panel) return; var tab = this.getPanelTab(panel); if (tab) { var self = this; Spry.Widget.Accordion.addEventListener(tab, "click", function(e) { return self.onPanelClick(panel); }, false); Spry.Widget.Accordion.addEventListener(tab, "mouseover", function(e) { return self.onPanelTabMouseOver(panel); }, false); Spry.Widget.Accordion.addEventListener(tab, "mouseout", function(e) { return self.onPanelTabMouseOut(panel); }, false); } }; Spry.Widget.Accordion.addEventListener = function(element, eventType, handler, capture) { try { if (element.addEventListener) element.addEventListener(eventType, handler, capture); else if (element.attachEvent) element.attachEvent("on" + eventType, handler); } catch (e) {} }; Spry.Widget.Accordion.prototype.initPanel = function(panel, isDefault) { var content = this.getPanelContent(panel); if (isDefault) { this.currentPanel = panel; this.removeClassName(panel, this.closedClass); this.addClassName(panel, this.openClass); } else { this.removeClassName(panel, this.openClass); this.addClassName(panel, this.closedClass); content.style.height = "0px"; } this.attachPanelHandlers(panel); }; Spry.Widget.Accordion.prototype.attachBehaviors = function() { var panels = this.getPanels(); for (var i = 0; i < panels.length; i++) { this.initPanel(panels[i], i == this.defaultPanel); } if (this.enableKeyboardNavigation) { // XXX: IE doesn"t allow the setting of tabindex dynamically. This means we can"t // rely on adding the tabindex attribute if it is missing to enable keyboard navigation // by default. var tabIndexAttr = this.element.attributes.getNamedItem("tabindex"); // if (!tabIndexAttr) this.element.tabindex = 0; if (tabIndexAttr) { var self = this; Spry.Widget.Accordion.addEventListener(this.element, "focus", function(e) { return self.onFocus(e); }, false); Spry.Widget.Accordion.addEventListener(this.element, "blur", function(e) { return self.onBlur(e); }, false); Spry.Widget.Accordion.addEventListener(this.element, "keydown", function(e) { return self.onKeyDown(e); }, false); } } }; Spry.Widget.Accordion.prototype.getPanels = function() { return this.getElementChildren(this.element); }; Spry.Widget.Accordion.prototype.getCurrentPanel = function() { return this.currentPanel; }; Spry.Widget.Accordion.prototype.getCurrentPanelIndex = function() { var panels = this.getPanels(); for( var i = 0 ; i < panels.length; i++ ) { if( this.currentPanel == panels[i] ) return i; } return 0; }; Spry.Widget.Accordion.prototype.getPanelTab = function(panel) { if (!panel) return null; return this.getElementChildren(panel)[0]; }; Spry.Widget.Accordion.prototype.getPanelContent = function(panel) { if (!panel) return null; return this.getElementChildren(panel)[1]; }; Spry.Widget.Accordion.prototype.getElementChildren = function(element) { var children = []; var child = element.firstChild; while (child) { if (child.nodeType == 1 /* Node.ELEMENT_NODE */) children.push(child); child = child.nextSibling; } return children; }; Spry.Widget.Accordion.prototype.focus = function() { if (this.element && this.element.focus) this.element.focus(); }; ///////////////////////////////////////////////////// Spry.Widget.Accordion.PanelAnimator = function(accordion, panel, opts) { this.timer = null; this.interval = 0; this.stepCount = 0; this.fps = 0; this.steps = 10; this.duration = 500; this.onComplete = null; this.panel = panel; this.panelToOpen = accordion.getElement(panel); this.panelData = []; Spry.Widget.Accordion.setOptions(this, opts, true); // If caller specified speed in terms of frames per second, // convert them into steps. if (this.fps > 0) { this.interval = Math.floor(1000 / this.fps); this.steps = parseInt((this.duration + (this.interval - 1)) / this.interval); } else if (this.steps > 0) this.interval = this.duration / this.steps; // Set up the array of panels we want to animate. var panels = accordion.getPanels(); for (var i = 0; i < panels.length; i++) { var p = panels[i]; var c = accordion.getPanelContent(p); if (c) { var h = c.offsetHeight; if (h == undefined) h = 0; if (p == panel || h > 0) { var obj = new Object; obj.panel = p; obj.content = c; obj.fromHeight = h; obj.toHeight = (p == panel) ? (accordion.useFixedPanelHeights ? accordion.fixedPanelHeight : c.scrollHeight) : 0; obj.increment = (obj.toHeight - obj.fromHeight) / this.steps; obj.overflow = c.style.overflow; this.panelData.push(obj); c.style.overflow = "hidden"; c.style.height = h + "px"; } } } }; Spry.Widget.Accordion.PanelAnimator.prototype.start = function() { var self = this; this.timer = setTimeout(function() { self.stepAnimation(); }, this.interval); }; Spry.Widget.Accordion.PanelAnimator.prototype.stop = function() { if (this.timer) { clearTimeout(this.timer); // If we"re killing the timer, restore the overflow // properties on the panels we were animating! if (this.stepCount < this.steps) { for (i = 0; i < this.panelData.length; i++) { obj = this.panelData[i]; obj.content.style.overflow = obj.overflow; } } } this.timer = null; }; Spry.Widget.Accordion.PanelAnimator.prototype.stepAnimation = function() { ++this.stepCount; this.animate(); if (this.stepCount < this.steps) this.start(); else if (this.onComplete) this.onComplete(); }; Spry.Widget.Accordion.PanelAnimator.prototype.animate = function() { var i, obj; if (this.stepCount >= this.steps) { for (i = 0; i < this.panelData.length; i++) { obj = this.panelData[i]; if (obj.panel != this.panel) obj.content.style.height = "0px"; obj.content.style.overflow = obj.overflow; obj.content.style.height = obj.toHeight + "px"; } } else { for (i = 0; i < this.panelData.length; i++) { obj = this.panelData[i]; obj.fromHeight += obj.increment; obj.content.style.height = obj.fromHeight + "px"; } } }; </script>
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<script src="SpryAssets/SpryAccordion.js" type="text/javascript"></script>
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