Initial data commit

Task/Look-and-say-sequence/JavaScript/look-and-say-sequence-1.js

@@ -0,0 +1,9 @@
+function lookandsay(str) {
+    return str.replace(/(.)\1*/g, function(seq, p1){return seq.length.toString() + p1})
+}
+
+var num = "1";
+for (var i = 10; i > 0; i--) {
+    alert(num);
+    num = lookandsay(num);
+}

Task/Look-and-say-sequence/JavaScript/look-and-say-sequence-2.js

@@ -0,0 +1,13 @@
+function lookAndSay( s="" ){
+  var tokens=[]
+  var i=0, j=1
+  while( i<s.length ) {
+    while( j<s.length && s[j]===s[i] ) j++
+    tokens.push( `${j-i}${s[i]}` )
+    i=j++
+  }
+  return tokens.join("")
+}
+var phrase="1"
+for(var n=0; n<10; n++ )
+  console.log( phrase = lookAndSay( phrase ) )