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Getting User Input From JavaScript

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Submitted on: 3/30/2016 10:54:45 PM
By: Jake R. Pomperada  
Level: Beginner
User Rating: Unrated
Compatibility: JavaScript
Views: 2556
author picture
 
     A simple program that I wrote using JavaScript that shows how get input values from the user using text box in HTML and submit those values using buttons in HTML into JavaScript. I intended my work for beginners in JavaScript programming this code is most common problem encounters by beginners in JavaScript. I hope this simple code will help them getting started. If you have some questions please send me an email at jakerpomperada@gmail.com and jakerpomperada@yahoo.com. Add me at Facebook my address is jakerpomperada@gmail.com and jakerpomperada@yahoo.com My mobile number here in the Philippines is 09173084360.

 
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'**************************************
' Name: Getting User Input From JavaScript
' Description:A simple program that I wrote using JavaScript that shows how get input values from the user using text box in HTML and submit those values using buttons in HTML into JavaScript. I intended my work for beginners in JavaScript programming this code is most common problem encounters by beginners in JavaScript. I hope this simple code will help them getting started.
If you have some questions please send me an email at jakerpomperada@gmail.com and jakerpomperada@yahoo.com.
Add me at Facebook my address is jakerpomperada@gmail.com and jakerpomperada@yahoo.com
My mobile number here in the Philippines is 09173084360.
' By: Jake R. Pomperada
'**************************************

<html>
<style>
body {
font-family:arial;
 font-size:20px;
 font-weight:bold;
 color:blue;
}
p {
 font-family:arial;
 font-size:20px;
 font-weight:bold;
 color: green;
 }
</style> 
<body>
Enter your name
<input type="text" id="name" size="20" maxlength="20" required>
<br><br>
<button onclick="Greet(this);"> Ok </button>     
<button onclick="Clear(this);"> Clear </button>
<br>
<p id="display"> </p>
<script>
function Greet(field)
{
var hello;
var field = document.getElementById('name');
if (field.value == '') {
 alert("Field is empty");
 document.getElementById('name').value="";
 document.getElementById('name').focus();
 }
 else {
 hello = "Hello " + field.value;
 document.getElementById("display").innerHTML = hello;
 }
}
function Clear(field)
{
var hello;
var field = document.getElementById('name');
if (field.value == '') {
 alert("Field is empty");
 document.getElementById('name').value="";
 document.getElementById('name').focus();
 }
 else { 
 document.getElementById('name').value =" ";
 document.getElementById("display").innerHTML = "";
 document.getElementById('name').focus();
 }
}
</script>
</body>
<html>


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