OneNav主题-美化wordperss给背景加上多何彩带

JS代码：

background: url()可以加上背景图片

document.writeln("<canvas id=\'bg_canvas\' style=\'width:100%;height:100%;position:fixed;top:0;left:0;z-index:-1;background-color :#000;background: url() repeat;\'></canvas>");(function(name,factory){if(typeof window==="object"){window[name]=factory()} })("丝带",function(){var _w=window,_b=document.body,_d=document.documentElement;var random=function(){if(arguments.length===1){if(Array. isArray(arguments[0])){var index=Math.round(random(0,arguments[0].length-1));return arguments[0][index]}return random(0,arguments[0]) }else if(arguments.length===2){return Math.random()*(arguments[1]-arguments[0])+arguments[0]}return 0};var screenInfo=function(e){var width=Math.max(0,_w.innerWidth||_d.clientWidth||_b.clientWidth||0),height=Math.max(0,_w.innerHeight||_d.clientHeight||_b.clientHeight||0 ),scrollx=Math.max(0,_w.pageXOffset||_d.scrollLeft||_b.scrollLeft||0)-(_d.clientLeft||0),scrolly=Math.max(0,_w.pageYOffset||_d. scrollTop||_b.scrollTop||0)-(_d.clientTop||0);return{width:width,height:height,ratio:width/height,centerx:width/2,centery:height/2,scrollx: scrollx,scrolly:scrolly}};var mouseInfo=function(e){var screen=screenInfo(e),mousex=e?Math.max(0,e.pageX||e.clientX||0):0,mousey =e?Math.max(0,e.pageY||e.clientY||0):0;return{mousex:mousex,mousey:mousey,centerx:mousex-screen.width/2,centery:mousey-screen. height/2}};var Point=function(x,y){this.x=0;this.y=0;this.set(x,y)};Point.prototype={constructor:Point,set:function (x,y){this.x=x||0;this.y=y||0},copy:function(point){this.x=point.x||0;this.y=point.y ||0;return this},multiply:function(x,y){this.x*=x||1;this.y*=y||1;return this},divide:function(x,y){ this.x/=x||1;this.y/=y||1;return this}，添加：function(x,y){this.x+=x||0;this.y+=y||0;return this},subtract:function(x,y){this.x-=x||0;this. y-=y||0;return this},clampX:function(min,max){this.x=Math.max(min,Math.min(this.x,max));return this},clampY:function (min,max){this.y=Math.max(min,Math.min(this.y,max));return this},flipX:function(){this.x*=-1;return this}, flipY:function(){this.y*=-1;return this}};var Factory=function(options){this._canvas=null;this._context=null;this._sto=null;this._width=0 ;this._height=0;this._scroll=0;this._ribbons=[];this._options={colorSaturation:"100%",colorBrightness:"60%",colorAlpha:0.80,colorCycleSpeed:8,verticalPosition:" center",horizo​​ntalSpeed:200,ribbonCount:5,strokeSize:0,parallaxAmount:-0.0,animateSections:true};this._onDraw=this._onDraw.bind(this);this._onResize=this._onResize.bind(this) ;this._onScroll=this._onScroll.bind(this);this.setOptions(options);this.init()};Factory.prototype={constructor:Factory,setOptions:function(options){if(typeof options==="object"){for(var key in options){ if(options.hasOwnProperty(key)){this._options[key]=options[key]}}}},init:function(){try{this._canvas=document.createElement("canvas");this._canvas .style["display"]="block";this._canvas.style["position"]="fixed";this._canvas.style["margin"]="0";this._canvas.style["padding "]="0";this._canvas.style["border"]="0";this._canvas.style["outline"]="0";this._canvas.style["left"]="0 ";this._canvas.style["top"]="0";this._canvas.style["width"]="100%";this._canvas.style["height"]="100%";this._canvas.style["z-index"]="-1";this._canvas.id="bg_canvas";this._onResize();this._context=this._canvas.getContext("2d");this ._context.clearRect(0,0,this._width,this._height);this._context.globalAlpha=this._options.colorAlpha;window.addEventListener("resize",this._onResize);window.addEventListener("scroll" ,this._onScroll);document.body.appendChild(this._canvas)}catch(e){console.warn("Canvas Context Error: "+e.toString());return}this._onDraw()},addRibbon :function(){var dir=Math.round(random(1,9))>5?"right":"left",stop=1000,hide=200,min=0-hide,max=this._width+ hide,movex=0,movey=0,startx=dir==="right"?min:max,starty=Math.round(random(0,this._height));if(/^(top|min)$ /i.test(this._options.VerticalPosition)){starty=0+hide}else if(/^(middle|center)$/i.test(this._options.verticalPosition)){starty=this._height/2}else if(/^(bottom|) max)$/i.test(this._options.verticalPosition)){starty=this._height-hide}varribbon=[],point1=new Point(startx,starty),point2=new Point(startx,starty), point3=null,color=Math.round(random(0,360)),delay=0;while(true){if(stop<=0)break;stop--;movex=Math.round((Math.random() *1-0.2)*this._options.horizo​​ntalSpeed);movey=Math.round((Math.random()*1-0.5)*(this._height*0.25));point3=new Point();point3.copy (point2);if(dir==="right"){point3.add(movex,movey);if(point2.x>=max)break}else if(dir==="left"){point3.subtract (movex,movey);if(point2.x<=min)break}ribbon.push({point1:new Point(point1.x,point1.y),point2:new Point(point2.x,point2.y), point3:point3,color:color,delay:delay,dir:dir,alpha:0,phase:0});point1.copy(point2);point2.copy(point3);delay+=4;color+=this._options.colorCycleSpeed}this._ribbons.push(ribbon)},_drawRibbonSection:function(section){if(section) ){if(section.phase>=1&§ion.alpha<=0){return true}if(section.delay<=0){section.phase+=0.02;section.alpha=Math.sin(section.phase)*1 ;section.alpha=section.alpha<=0?0:section.alpha;section.alpha=section.alpha>=1?1:section.alpha;if(this._options.animateSections){var mod=Math.sin (1+section.phase*Math.PI/2)*0.1;if(section.dir==="right"){section.point1.add(mod,0);section.point2.add(mod,0) ;section.point3.add(mod,0)}else{section.point1.subtract(mod,0);section.point2.subtract(mod,0);section.point3.subtract(mod,0)}section.point1 .add(0,mod);section.point2.add(0,mod);section.point3.add(0,mod)}}else{section.delay-=0.5}var s=this._options.colorSaturation,l =这个。_options.colorBrightness,c="hsla("+section.color+", "+s+", "+l+", "+section.alpha+" )";this._context.save();if(this._options.parallaxAmount !==0){this._context.translate(0,this._scroll*this._options.parallaxAmount)}this._context.beginPath();this._context.moveTo(section.point1.x,section.point1.y );this._context.lineTo(section.point2.x,section.point2.y);this._context.lineTo(section.point3.x,section.point3.y);this._context.fillStyle=c;this. _context.fill();if(this._options.strokeSize>0){this._context.lineWidth=this._options.strokeSize;this._context.strokeStyle=c;this._context.lineCap="round";this._context .stroke()}this._context.restore()}return false},_onDraw:function(){for(var i=0,t=this._ribbons.length;i<t;++i){if(! this._ribbons[i]){this._ribbons.splice(i,1)}}this._context.clearRect(0,0,this._width,this._height);for(var a=0;a<this._ribbons.length;++a){varribbon=this._ribbons[a],numSections=ribbon.length,numDone=0;for (var b=0;b<numSections;++b){if(this._drawRibbonSection(ribbon[b])){numDone++}}if(numDone>=numSections){this._ribbons[a]=null}}if (this._ribbons.length<this._options.ribbonCount){this.addRibbon()}requestAnimationFrame(this._onDraw)},_onResize:function(e){var screen=screenInfo(e);this._width=screen.width ;this._height=screen.height;if(this._canvas){this._canvas.width=this._width;this._canvas.height=this._height;if(this._context){this._context.globalAlpha=this ._options.colorAlpha}}},_onScroll:function(e){var screen=screenInfo(e);this._scroll=screen.scrolly}};return Factory});new Ribbons();numDone=0;for(var b=0;b<numSections;++b){if(this._drawRibbonSection(ribbon[b])){numDone++}}if(numDone>=numSections){this._ribbons[a] =null}}if(this._ribbons.length<this._options.ribbonCount){this.addRibbon()}requestAnimationFrame(this._onDraw)},_onResize:function(e){var screen=screenInfo(e);this. _width=screen.width;this._height=screen.height;if(this._canvas){this._canvas.width=this._width;this._canvas.height=this._height;if(this._context){this. _context.globalAlpha=this._options.colorAlpha}}},_onScroll:function(e){var screen=screenInfo(e);this._scroll=screen.scrolly}};return Factory});new Ribbons();numDone=0;for(var b=0;b<numSections;++b){if(this._drawRibbonSection(ribbon[b])){numDone++}}if(numDone>=numSections){this._ribbons[a] =null}}if(this._ribbons.length<this._options.ribbonCount){this.addRibbon()}requestAnimationFrame(this._onDraw)},_onResize:function(e){var screen=screenInfo(e);this. _width=screen.width;this._height=screen.height;if(this._canvas){this._canvas.width=this._width;this._canvas.height=this._height;if(this._context){this. _context.globalAlpha=this._options.colorAlpha}}},_onScroll:function(e){var screen=screenInfo(e);this._scroll=screen.scrolly}};return Factory});new Ribbons();_onDraw)},_onResize:function(e){var screen=screenInfo(e);this._width=screen.width;this._height=screen.height;if(this._canvas){this._canvas.width=this. _width;this._canvas.height=this._height;if(this._context){this._context.globalAlpha=this._options.colorAlpha}}},_onScroll:function(e){var screen=screenInfo(e);this ._scroll=screen.scrolly}};return Factory});new Ribbons();_onDraw)},_onResize:function(e){var screen=screenInfo(e);this._width=screen.width;this._height=screen.height;if(this._canvas){this._canvas.width=this. _width;this._canvas.height=this._height;if(this._context){this._context.globalAlpha=this._options.colorAlpha}}},_onScroll:function(e){var screen=screenInfo(e);this ._scroll=screen.scrolly}};return Factory});new Ribbons();

保存为一个单独的 js 文件，然后引入主题（如果你是单独保存为一个 js 文件，请在 header 引入js文件）。

<script> let leftHeader=document.querySelectorAll("span.nav-icon>svg,span.nav-icon>i");let leftHeaderColorArr=["#FF69B4","#58c7ea","#E066FF","#FF69B4","#FFA54F","#90EE90"];leftHeader.forEach(tag=>{tagsColor=leftHeaderColorArr[Math.floor(Math.random()*leftHeaderColorArr.length)];tag.style.color=tagsColor}); </script> <script> let tags=document.querySelectorAll("#tag_cloud-2 a,.list-group-item .pull-right");let colorArr=["#428BCA","#AEDCAE","#ECA9A7","#DA99FF","#FFB380","#D9B999"];tags.forEach(tag=>{tagsColor=colorArr[Math.floor(Math.random()*colorArr.length)];tag.style.backgroundColor=tagsColor}); </script>

在 header加上这段代码