diff --git a/random.js b/random.js
new file mode 100644
index 0000000000000000000000000000000000000000..b620768a4c9aacadb2ee893e302126318fa63d64
--- /dev/null
+++ b/random.js
@@ -0,0 +1,45 @@
+/**
+ * Created by fangzide on 16/9/5.
+ */
+$(function () {
+    var run = 0,
+        heading = $("h1"),
+        timer;
+
+    $("#start").click(function () {
+        var list = $("#list").val().replace(/ +/g, " ").replace(/^ | $/g, "").split(" ");
+        if (!run) {
+            heading.html(heading.html().replace("吃这个！", "吃什么？"));
+            $(this).html("停止");
+            timer = setInterval(function () {
+                var r = Math.ceil(Math.random() * list.length),
+                    food = list[r - 1];
+                $("#what").html(food);
+                var rTop = Math.ceil(Math.random() * $(document).height()),
+                    rLeft = Math.ceil(Math.random() * ($(document).width() - 50)),
+                    rSize = Math.ceil(Math.random() * (37 - 14) + 14);
+                $("<span class='temp'></span>").html(food).hide().css({
+                    "top": rTop,
+                    "left": rLeft,
+                    "color": "rgba(0,0,0,." + Math.random() + ")",
+                    "fontSize": rSize + "px"
+                }).appendTo("body").fadeIn("slow", function () {
+                    $(this).fadeOut("slow", function () {
+                        $(this).remove();
+                    });
+                });
+            }, 50);
+            run = 1;
+        } else {
+            heading.html(heading.html().replace("吃什么？", "吃这个！"));
+            $(this).html("不行，换一个");
+            clearInterval(timer);
+            run = 0;
+        };
+    });
+
+    document.onkeydown = function enter(e) {
+        var e = e || event;
+        if (e.keyCode == 13) $("#start").trigger("click");
+    };
+});
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