Add custom cover background

docs/README.md

@@ -114,6 +114,23 @@ Generate a cover page through with markdown. Create a `_coverpage.md` and set `d
 [Get Started](#quick-start)
 ```
 
+#### Custom background
+Currently the background of cover page is generated randomly. We can customize the background, just using the syntax to add image.
+
+```markdown
+# docsify <small>1.2.0</small>
+
+> xxx
+
+[GitHub](https://github.com/QingWei-Li/docsify/)
+[Get Started](#quick-start)
+
+<!-- background image -->
+![](_media/bg.png)
+<!-- background color -->
+![color](#f0f0f0)
+```
+
 
 ### Options
 

docs/_media/snow.js

@@ -1,57 +0,0 @@
-// Fork https://github.com/HermannBjorgvin/SnowJs/blob/master/snow.js
-(function(){
-    if (new Date().getDate() > 25) return
-    var canvas = document.createElement("canvas");
-    var ctx = canvas.getContext("2d");
-    var flakeArray = [];
-
-    canvas.style.pointerEvents = "none";
-    canvas.style.position = "absolute";
-    canvas.style.top = 0;
-    canvas.style.left = 0;
-    canvas.style.width = "100vw";
-    canvas.style.height = "100vh";
-    document.body.appendChild(canvas);
-
-    function canvasResize(){
-        canvas.height = canvas.offsetHeight;
-        canvas.width = canvas.offsetWidth;
-    }
-    canvasResize();
-
-    window.onresize = function() {
-        canvasResize();
-    };
-
-    var MyMath = Math;
-
-    setInterval(function() {
-        ctx.clearRect(0, 0, canvas.width, canvas.height);
-        ctx.beginPath();
-
-        var random = MyMath.random();
-        var distance = .05 + .95 * random;
-
-        flake = {};
-        flake.x = 1.5 * canvas.width * MyMath.random() - .5 * canvas.width;
-        flake.y = -9;
-        flake.velX = 2 * distance * (MyMath.random() / 2 + .5);
-        flake.velY = (4 + 2 * MyMath.random()) * distance;
-        flake.radius = MyMath.pow(5 * random, 2) / 5;
-        flake.update = function() {
-            var t = this;
-            t.x += t.velX;
-            t.y += t.velY;
-            ctx.beginPath();
-            ctx.arc(t.x, t.y, t.radius, 0, 2 * MyMath.PI, !1);
-            ctx.fillStyle = "#FFF";
-            ctx.fill()
-        };
-
-        flakeArray.push(flake);
-
-        for (b = 0; b < flakeArray.length; b++) {
-            flakeArray[b].y > canvas.height ? flakeArray.splice(b, 1) : flakeArray[b].update()
-        }
-    }, 16);
-})();

docs/zh-cn.md

@@ -121,6 +121,23 @@ docsify serve docs
 ```
 
 
+#### 自定义封面背景
+默认的背景是随机生成的，你可以自定义背景色或者背景图片。只需要在文档末尾用添加图片的 Markdown 语法
+
+```markdown
+# docsify <small>1.2.0</small>
+
+> xxx
+
+[GitHub](https://github.com/QingWei-Li/docsify/)
+[Get Started](#quick-start)
+
+<!-- 背景图片 -->
+![](_media/bg.png)
+<!-- 背景色 -->
+![color](#f0f0f0)
+```
+
 
 ### 配置参数
 
@@ -289,7 +306,7 @@ Sidebar 开关按钮
 
 #### coverpage
 
-生成封面，参考 [#封面](#封面).
+生成封面，参考 [#封面](/zh-cn#封面).
 
 ```html
 <script src="/lib/docsify.js" data-coverpage></script>