divied功能加入錯誤判斷

2020-10-25 16:14:57 +08:00 · 2020-10-25 16:14:57 +08:00 · c5fe0f5268
commit c5fe0f5268
parent c39c6f3bef
1 changed files with 3 additions and 0 deletions
--- a/index.html
+++ b/index.html
@ -12,6 +12,9 @@
  }

  function divide(a, b) {
+    if(b <= 0) {
+      throw 'b must be greater than0'
+    }
    return a/b;
  }