评论框添加七彩打字动画

今天给大家分享一个小技巧，给我们的博客文章评论框添加七彩打字动画。这个效果不仅能让我们的博客更加生动有趣，还能提升用户的评论体验，增加互动乐趣。让我们一起来看看如何实现这个效果吧！

效果展示

白天模式：

夜晚模式：

具体操作

1.复制代码

将以下JS代码复制到主题目录下的 footer.php 文件中 body 标签结束前：

(function webpackUniversalModuleDefinition(a,b){if(typeof exports==="object"&&typeof module==="object"){module.exports=b()}else{if(typeof define==="function"&&define.amd){define([],b)}else{if(typeof exports==="object"){exports["POWERMODE"]=b()}else{a["POWERMODE"]=b()}}}})(this,function(){return(function(a){var b={};function c(e){if(b[e]){return b[e].exports}var d=b[e]={exports:{},id:e,loaded:false};a[e].call(d.exports,d,d.exports,c);d.loaded=true;return d.exports}c.m=a;c.c=b;c.p="";return c(0)})([function(c,g,b){var d=document.createElement("canvas");d.width=window.innerWidth;d.height=window.innerHeight;d.style.cssText="position:fixed;top:0;left:0;pointer-events:none;z-index:999999";window.addEventListener("resize",function(){d.width=window.innerWidth;d.height=window.innerHeight});document.body.appendChild(d);var a=d.getContext("2d");var n=[];var j=0;var k=120;var f=k;var p=false;o.shake=true;function l(r,q){return Math.random()*(q-r)+r}function m(r){if(o.colorful){var q=l(0,360);return"hsla("+l(q-10,q+10)+", 100%, "+l(50,80)+"%, "+1+")"}else{return window.getComputedStyle(r).color}}function e(){var t=document.activeElement;var v;if(t.tagName==="TEXTAREA"||(t.tagName==="INPUT"&&t.getAttribute("type")==="text")){var u=b(1)(t,t.selectionStart);v=t.getBoundingClientRect();return{x:u.left+v.left,y:u.top+v.top,color:m(t)}}var s=window.getSelection();if(s.rangeCount){var q=s.getRangeAt(0);var r=q.startContainer;if(r.nodeType===document.TEXT_NODE){r=r.parentNode}v=q.getBoundingClientRect();return{x:v.left,y:v.top,color:m(r)}}return{x:0,y:0,color:"transparent"}}function h(q,s,r){return{x:q,y:s,alpha:1,color:r,velocity:{x:-1+Math.random()*2,y:-3.5+Math.random()*2}}}function o(){var t=e();var s=5+Math.round(Math.random()*10);while(s--){n[j]=h(t.x,t.y,t.color);j=(j+1)%500}f=k;if(!p){requestAnimationFrame(i)}if(o.shake){var r=1+2*Math.random();var q=r*(Math.random()>0.5?-1:1);var u=r*(Math.random()>0.5?-1:1);document.body.style.marginLeft=q+"px";document.body.style.marginTop=u+"px";setTimeout(function(){document.body.style.marginLeft="";document.body.style.marginTop=""},75)}}o.colorful=false;function i(){if(f>0){requestAnimationFrame(i);f--;p=true}else{p=false}a.clearRect(0,0,d.width,d.height);for(var q=0;q<n.length;++q){var r=n[q];if(r.alpha<=0.1){continue}r.velocity.y+=0.075;r.x+=r.velocity.x;r.y+=r.velocity.y;r.alpha*=0.96;a.globalAlpha=r.alpha;a.fillStyle=r.color;a.fillRect(Math.round(r.x-1.5),Math.round(r.y-1.5),3,3)}}requestAnimationFrame(i);c.exports=o},function(b,a){(function(){var d=["direction","boxSizing","width","height","overflowX","overflowY","borderTopWidth","borderRightWidth","borderBottomWidth","borderLeftWidth","borderStyle","paddingTop","paddingRight","paddingBottom","paddingLeft","fontStyle","fontVariant","fontWeight","fontStretch","fontSize","fontSizeAdjust","lineHeight","fontFamily","textAlign","textTransform","textIndent","textDecoration","letterSpacing","wordSpacing","tabSize","MozTabSize"];var e=window.mozInnerScreenX!=null;function c(k,l,o){var h=o&&o.debug||false;if(h){var i=document.querySelector("#input-textarea-caret-position-mirror-div");if(i){i.parentNode.removeChild(i)}}var f=document.createElement("div");f.id="input-textarea-caret-position-mirror-div";document.body.appendChild(f);var g=f.style;var j=window.getComputedStyle?getComputedStyle(k):k.currentStyle;g.whiteSpace="pre-wrap";if(k.nodeName!=="INPUT"){g.wordWrap="break-word"}g.position="absolute";if(!h){g.visibility="hidden"}d.forEach(function(p){g[p]=j[p]});if(e){if(k.scrollHeight>parseInt(j.height)){g.overflowY="scroll"}}else{g.overflow="hidden"}f.textContent=k.value.substring(0,l);if(k.nodeName==="INPUT"){f.textContent=f.textContent.replace(/\s/g,"\u00a0")}var n=document.createElement("span");n.textContent=k.value.substring(l)||".";f.appendChild(n);var m={top:n.offsetTop+parseInt(j["borderTopWidth"]),left:n.offsetLeft+parseInt(j["borderLeftWidth"])};if(h){n.style.backgroundColor="#aaa"}else{document.body.removeChild(f)}return m}if(typeof b!="undefined"&&typeof b.exports!="undefined"){b.exports=c}else{window.getCaretCoordinates=c}}())}])});
POWERMODE.colorful=true;POWERMODE.shake=false;document.body.addEventListener("input",POWERMODE);

2.根据你自己主题的实际情况进行微调即可。

完！