testing_project/inputValidation.html at main · PRIYA0444/testing_project · GitHub

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<!DOCTYPE html>
<html>
    <head>
<meta charset="UTF-8" content="width=device-width,intial-scale=1.0" >
<style>
    header
    {
        text-align:center;
        padding:40px;
    }
</style>
</head>
<body>
    <header><h2>Numeric Input Validation </h2></header>
   <div><lebal>Data:</lebal>

<input type="text" id="data" placeholder="Please enter the data">
<button onclick="promise_testing()">Submit</button>
<p id ="result"></p>
<h4 id ="alert"></h4>
<script>

function promise_testing()
{
    let input=document.getElementById("data").value;
    let result=document.getElementById("result");
    let alert=document.getElementById("alert");
    let prm = new Promise((resolve,reject)=>
{
if(/^[0-9]+$/g.test(input)&&(input.trim()!==""))
{
    resolve(input);
}
else
{
    reject(input);
}
});
prm
.then((massege)=>
{
    result.style.color="green"
    result.textContent=massege;
    //you cant use console for web browser its for printing on the console
    //avoid using console.log() directly on webpage it will not e print
     alert.textContent="the input is valid✅";

})
.catch((error)=>
{
    result.style.color="red"
    result.textContent=error;
    alert.textContent="Input is not valid ❌"

});
}

</script></div>
</body>
</html>