diff --git a/javascript/day1/day1.js b/javascript/day1/day1.js
index 13242bb..b989cc3 100644
--- a/javascript/day1/day1.js
+++ b/javascript/day1/day1.js
@@ -15,5 +15,13 @@ let sumNum = 0
 let lines = data.split("\n")
 
 for (let line of lines){
-    
+    for (let char of line){
+        isNum(char)
+    }
+}
+
+function isNum(testchar){
+    if (testchar == "0", "1", "2", "3", "4", "5", "6", "7", "8", "9"){
+        return testchar
+    }
 }
\ No newline at end of file