Add lab 13 skeleton

journal/_src/posts/2022-10-26-lab-13.md

@@ -0,0 +1,9 @@
+    Title: Lab Thirteen
+    Date: 2022-10-26T08:30:00
+    Tags: cs2613, lab, javascript
+
+Sample description
+<!-- more -->
+
+## Sample Body
+Sample Body

labs/L13/animation.js

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+// let str="";
+// for (let i=0; i<60; i++) {
+//     console.log('\033c');
+//     str+= "*";
+//     console.log(str);
+// }
+
+//console.log("all done!");
+
+// function loop(i,str) {
+//     if (i>0) {
+//         console.log("\033c");
+//         console.log(str);
+//         setTimeout(function() { loop(i-1, str+"*"); }, 1000);
+//     }
+// }
+
+// loop(20,"*");
+
+// console.log("all done!");
+
+function animate(iterations) {
+    let i=0;
+    let str="*";
+    let timer = null;
+    function frame() {
+        
+        console.log('\033c');
+        console.log(str);
+        if (i>=iterations) {
+			clearInterval(timer);
+			console.log("all done!");
+		}
+		
+    }
+    timer=setInterval(frame,300);
+}
+
+animate(20);