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practice4.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Positive or Negative numbers</title>
<style>
#btn{
cursor: pointer;
}
</style>
</head>
<body>
<input type="number" id="hello">
<button onclick="hii()"id="btn">Check</button>
<h1 id="head"></h1>
</body>
<script>
//USING MATH.(SIGN) FUNCTION
// function hii(){
// let value = document.getElementById("hello").value;
// // alert("value");
// let result = Math.sign(value);
// document.getElementById("head").innerHTML=`${result}`
// }
//USING USER DEVELEPOR FUNCTION
function hii(){
let value = document.getElementById("hello").value;
if(value >0){
res =`${value} is Positive number`;
}else if(value < 0){
res=`${value} is negative number`;
}else if(value==0){
res=`${value} is zero`;
}
document.getElementById("head").innerHTML=`${res}`
}
</script>
</html>