Here , we are discussed on alert boxes
1) Simple Alert box
2) Confirm box
3) Prompt box
1) Simple Alert Box:
following code for alert box:
<html>
<body>
<h2>JavaScript Alert</h2>
<button onclick="myFunction()">Check It </button>
<script>
function myFunction() {
alert("alert box demo..!");
}
</script>
</body>
</html>
Output:
2) Confirm Alert Box:
following code for confirm alert box:
<html>
<body>
<h2>JavaScript Confirm Box</h2>
<button onclick="myFunction()">Check it</button>
<p id="demo"></p>
<script>
function myFunction() {
var txt;
if (confirm("Press a button!")) {
txt = "You pressed OK!";
} else {
txt = "You pressed Cancel!";
}
document.getElementById("demo").innerHTML = txt;
}
</script>
</body>
</html>
Output:
3) Prompt Alert Box:
following code for prompt alert box:
<html>
<body>
<h2>JavaScript Prompt</h2>
<button onclick="myFunction()">Check it</button>
<p id="demo"></p>
<script>
function myFunction() {
var txt;
var person = prompt("Please enter your name:", "fruxinfo");
if (person == null || person == "") {
txt = "User cancelled the prompt.";
} else {
txt = "Hello " + person + "! How are you..?";
}
document.getElementById("demo").innerHTML = txt;
}
</script>
</body>
</html>
Output:
Fruxinfo Pvt. Ltd.
Following different alert boxes
1) Simple Alert box
2) Confirm box
3) Prompt box
1) Simple Alert Box:
following code for alert box:
<html>
<body>
<h2>JavaScript Alert</h2>
<button onclick="myFunction()">Check It </button>
<script>
function myFunction() {
alert("alert box demo..!");
}
</script>
</body>
</html>
Output:
2) Confirm Alert Box:
following code for confirm alert box:
<html>
<body>
<h2>JavaScript Confirm Box</h2>
<button onclick="myFunction()">Check it</button>
<p id="demo"></p>
<script>
function myFunction() {
var txt;
if (confirm("Press a button!")) {
txt = "You pressed OK!";
} else {
txt = "You pressed Cancel!";
}
document.getElementById("demo").innerHTML = txt;
}
</script>
</body>
</html>
Output:
3) Prompt Alert Box:
following code for prompt alert box:
<html>
<body>
<h2>JavaScript Prompt</h2>
<button onclick="myFunction()">Check it</button>
<p id="demo"></p>
<script>
function myFunction() {
var txt;
var person = prompt("Please enter your name:", "fruxinfo");
if (person == null || person == "") {
txt = "User cancelled the prompt.";
} else {
txt = "Hello " + person + "! How are you..?";
}
document.getElementById("demo").innerHTML = txt;
}
</script>
</body>
</html>
Output:
Fruxinfo Pvt. Ltd.
Fruxinfo Pvt. Ltd. I'Our company is 7 year old. We are a highly reputed company that has been providing quite a number of digital oriented services including SMO, SEO, web development and Mobile development services across board. Additionally, our professionals have been involved in all various developments that include designing and creation of application that meet accepted standards, all these enabled by the use of versatile programming languages that have the greatest impact on business irrespective of the industry. 
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