JavaScript: Store and display the values of text boxes of a form

Last update on May 30 2022 10:01:59 (UTC/GMT +8 hours)

JavaScript DOM: Exercise-2 with Solution

Write a JavaScript function to get the values of First and Last name of the following form.

Sample HTML file:

<!DOCTYPE html>
<html><head>
<meta charset=utf-8 />
<title>Return first and last name from a form - w3resource</title>
</head><body>
<form id="form1" onsubmit="getFormvalue()">
First name: <input type="text" name="fname" value="David"><br>
Last name: <input type="text" name="lname" value="Beckham"><br>
<input type="submit" value="Submit">
</form>
</body>
</html>

Sample Solution: -

HTML Code:

<!DOCTYPE html>
<html><head>
<meta charset=utf-8 />
<title>Return first and last name from a form - w3resource</title>
<style type="text/css">
body {margin: 30px;}
</style> 
</head><body>
<form id="form1" onsubmit="getFormvalue()">
First name: <input type="text" name="fname" value="David"><br>
Last name: <input type="text" name="lname" value="Beckham"><br>
<input type="submit" value="Submit">
</form>
</body></html>

JavaScript Code :

function getFormvalue()
{
  var x=document.getElementById("form1");
  for (var i=0;i<x.length;i++)
  {
   if (x.elements[i].value!='Submit')
    {  
      console.log(x.elements[i].value);
     }  
   }
}

Sample Output:

Flowchart:

Live Demo:

See the Pen javascript-dom-exercise-2 by w3resource (@w3resource) on CodePen.

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JavaScript: Tips of the Day

How to insert an item into an array at a specific index (JavaScript)?

What you want is the splice function on the native array object.

arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:

var arr = []; arr[0] = "Jani"; arr[1] = "Hege"; arr[2] = "Stale"; arr[3] = "Kai Jim"; arr[4] = "Borge"; console.log(arr.join()); arr.splice(2, 0, "Lene"); console.log(arr.join());

Ref: https://bit.ly/2BXbp04