diff --git a/001-counter-app/Sakib/index.html b/001-counter-app/Sakib/index.html
new file mode 100644
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+++ b/001-counter-app/Sakib/index.html
@@ -0,0 +1,34 @@
+
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+ Counter App
+
+
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0
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\ No newline at end of file
diff --git a/001-counter-app/Sakib/script.js b/001-counter-app/Sakib/script.js
new file mode 100644
index 0000000..4016d50
--- /dev/null
+++ b/001-counter-app/Sakib/script.js
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+console.log(" nazmus sakib");
+var count =0;
+function setapplicationtitle()
+{
+ const titleElement =document.getElementById('title');
+console.log(titleElement);
+titleElement.innerText="Counter App";
+}
+setapplicationtitle();
+const incrementButton = document.getElementById('increment');
+// --- this part of code is for showing alert when + Button is clicked !!!
+// function increaseCount()
+// {
+// alert(' Increase Button Clicked!!!');
+// }
+// incrementButton.addEventListener('click',increaseCount);
+
+const countshow= document.getElementById('counter');
+function increaseCount()
+{
+ if(count>=10)
+ {
+ alert('OverFlow !!!!');
+ }
+ else
+ {
+ count=count+1;
+ countshow.innerText=count;
+ }
+
+}
+incrementButton.addEventListener('click',increaseCount)
+
+const decrementButton =document.getElementById('decrement');
+
+
+// --- this part of code is for showing alert when - Button is clicked !!!
+// function decreseCount()
+// {
+// alert('Decrese Button Clicked !!!');
+// }
+// decrementButton.addEventListener('click',decreseCount);
+
+const showdecrement=document.getElementById('counter');
+function decrementCount()
+{
+ if(count===0)
+ {
+ alert("Negative Value is not acceptable !!!!");
+ }
+ else
+ {
+ count=count-1;
+ showdecrement.innerText=count;
+ }
+
+}
+
+decrementButton.addEventListener('click',decrementCount);
+
+
+
+// const counterElement=document.getElementById('counter');
+// counterElement.innerText=3;
+
+
+