之前也分享过不过效果不是很理想,重新找了个分享下。

可以自己去 https://hcodes.github.io/demo-snowflakes/ 修改效果

HTML引用部分

<script src="https://unpkg.com/magic-snowflakes/dist/snowflakes.min.js"></script>
<script>
    // https://hcodes.github.io/demo-snowflakes/
    var sf = new Snowflakes({
        color: "#cccccc"
    });
</script>

 

JS代码部分

/*! Snowflakes | ? 2021 Denis Seleznev | MIT License | https://github.com/hcodes/snowflakes/ */
!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):(t="undefined"!=typeof globalThis?globalThis:t||self).Snowflakes=e()}(this,(function(){"use strict";var t="";function e(e,a){Object.keys(a).forEach((function(n){var i=n;t&&n.search("animation")>-1&&(i=t n[0].toUpperCase() n.substr(1)),e.style[i]=a[n]}))}function a(t){t&&t.parentNode&&t.parentNode.removeChild(t)}function n(t,e){t.classList.add(e)}function i(t,e){t.classList.remove(e)}function l(t,e){return t Math.floor(Math.random()*(e-t))}function o(t,e,a,n,i){return n (i-n)*(t-e)/(a-e)}"undefined"!=typeof window&&(t=Array.prototype.slice.call(window.getComputedStyle(document.documentElement,"")).join(",").search(/,animation/)>-1?"":"webkit");function s(t,e,a){return Math.floor(o(t,0,20,e,a))}var r=function(){function t(t){var a=t.minSize===t.maxSize;this.innerSize=a?0:l(0,20),this.size=s(this.innerSize,t.minSize,t.maxSize);var i=document.createElement("div"),r=document.createElement("div"),h=this.getAnimationProps(t),m={animationName:"snowflake_gid_" t.gid "_y",animationDelay:h.animationDelay,animationDuration:h.animationDuration,left:99*Math.random() "%",top:-Math.sqrt(2)*this.size "px",width:this.size "px",height:this.size "px"};a||(m.opacity=String(o(this.size,t.minSize,t.maxSize,t.minOpacity,t.maxOpacity))),e(i,m),e(r,{animationName:"snowflake_gid_" t.gid "_x_" this.innerSize,animationDelay:4*Math.random() "s"}),n(i,"snowflake"),n(r,"snowflake__inner"),t.types&&n(r,"snowflake__inner_type_" l(0,t.types)),t.wind&&n(r,"snowflake__inner_wind"),t.rotation&&n(r,"snowflake__inner_rotation" (Math.random()>.5?"":"_reverse")),i.appendChild(r),this.elem=i}return t.prototype.resize=function(t){var a=this.getAnimationProps(t);this.elem&&e(this.elem,a)},t.prototype.appendTo=function(t){this.elem&&t.appendChild(this.elem)},t.prototype.destroy=function(){delete this.elem},t.prototype.getAnimationProps=function(t){var e=t.containerHeight/50/t.speed,a=e/3;return{animationDelay:Math.random()*e "s",animationDuration:String(o(this.size,t.minSize,t.maxSize,e,a) "s")}},t}();return function(){function t(e){this.destroyed=!1,this.flakes=[],this.isBody=!1,this.params=this.setParams(e),this.isBody=this.params.container===document.body,t.gid  ,this.gid=t.gid,this.container=this.appendContainer(),this.params.stop&&this.stop(),this.appendStyles(),this.appendFlakes(),this.containerSize={width:this.width(),height:this.height()},this.handleResize=this.handleResize.bind(this),window.addEventListener("resize",this.handleResize,!1)}return t.prototype.start=function(){i(this.container,"snowflakes_paused")},t.prototype.stop=function(){n(this.container,"snowflakes_paused")},t.prototype.show=function(){i(this.container,"snowflakes_hidden")},t.prototype.hide=function(){n(this.container,"snowflakes_hidden")},t.prototype.destroy=function(){this.destroyed||(this.destroyed=!0,t.instanceCounter&&t.instanceCounter--,this.removeStyles(),a(this.container),this.flakes.forEach((function(t){return t.destroy()})),this.flakes=[],window.removeEventListener("resize",this.handleResize,!1))},t.prototype.handleResize=function(){var t=this.width(),a=this.height();if(this.containerSize.width!==t||this.containerSize.height!==a){this.containerSize.width=t,this.containerSize.height=a;var n=this.getFlakeParams();e(this.container,{display:"none"}),this.flakes.forEach((function(t){return t.resize(n)})),this.updateAnimationStyle(),function(t){e(t,{display:"block"})}(this.container)}},t.prototype.appendContainer=function(){var t=document.createElement("div");return n(t,"snowflakes"),n(t,"snowflakes_gid_" this.gid),this.isBody&&n(t,"snowflakes_body"),e(t,{zIndex:String(this.params.zIndex)}),this.params.container.appendChild(t),t},t.prototype.appendStyles=function(){t.instanceCounter||(this.mainStyleNode=this.injectStyle('.snowflake{-webkit-animation:snowflake_unknown 10s linear infinite;animation:snowflake_unknown 10s linear infinite;pointer-events:none;position:absolute;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;will-change:transform}.snowflake__inner,.snowflake__inner:before{bottom:0;left:0;position:absolute;right:0;top:0}.snowflake__inner:before{background-size:100% 100%;content:""}.snowflake__inner_wind{-webkit-animation:snowflake_unknown 2s ease-in-out infinite alternate;animation:snowflake_unknown 2s ease-in-out infinite alternate}.snowflake__inner_rotation:before{-webkit-animation:snowflake_rotation 10s linear infinite;animation:snowflake_rotation 10s linear 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