Create palindrome in JavaScript by using parseInt
A palindrome is a number or a text phrase that reads the same backward and forward. For example, each of the following five-digit integers is a palindrome: 12321, 55555, 45554 and 11611. Write a script that reads in a five-digit integer and determines whether it is a palindrome. If the number is not five digits long or is not a valid number, output XHTML text that displays an alert dialog indicating the problem to the user. Allow the user to enter a new value after dismissing the alert dialog. Continue the whole process until the user enters “stop”.
Hint:
Given a number say 12345:
One solution to find out values for all the digits
var startNumber = parseInt (12345/10000) will give you the first digit 1
var endNumber =12345%10 will give you last digit 5
After the comparison – if they are the same and you need to continue
var remaingNumber = parseInt ((12345 – startNumber *10000)/10 ) will give you the remaining number needs to be processed 234
Hint:
Given a number say 12345:
One solution to find out values for all the digits
var startNumber = parseInt (12345/10000) will give you the first digit 1
var endNumber =12345%10 will give you last digit 5
After the comparison – if they are the same and you need to continue
var remaingNumber = parseInt ((12345 – startNumber *10000)/10 ) will give you the remaining number needs to be processed 234
Last Comment
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ASKER
Please help me out I have done so far as following
But my this line giving me an error " var second=parseInt ((12345– startNumber *10000)/10 ) "
Here is the code
var d=window.prompt ("Enter the 5 digit number or stop to proecess the stop ", "0");
var strNumber= parseInt(d/10000)
var endNumber=parseInt(d%10)
var second=parseInt ((12345– startNumber *10000)/10 )
if (strNumber ==endNumber)
{
document.write("<b>Pend Number</b><br />")
document.write("The first Number is " +strNumber+ "<br />")
document.write("The end Number is " +endNumber+ "<br />")
document.write("The second number is " +second+ "<br />")
}
else
{
document.write("<b>Good Bye you put a wrong number</b>")
}
</script>
But my this line giving me an error " var second=parseInt ((12345– startNumber *10000)/10 ) "
Here is the code
var d=window.prompt ("Enter the 5 digit number or stop to proecess the stop ", "0");
var strNumber= parseInt(d/10000)
var endNumber=parseInt(d%10)
var second=parseInt ((12345– startNumber *10000)/10 )
if (strNumber ==endNumber)
{
document.write("<b>Pend Number</b><br />")
document.write("The first Number is " +strNumber+ "<br />")
document.write("The end Number is " +endNumber+ "<br />")
document.write("The second number is " +second+ "<br />")
}
else
{
document.write("<b>Good Bye you put a wrong number</b>")
}
</script>
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JavaScript
JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and in almost every mainstream web browser.
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