Solved

Javascript : Enter Maximum value, minimum value and certain variables in textbox

Posted on 2012-03-31
3
623 Views
Last Modified: 2012-08-13
hey all,

Below are the javascript to check on the textbox value. The textbox only allow user to enter 0 and the maximum value 100 but I also need to allow the user to enter '-' and 'X'. How do I modify the code to suits the criteria?

<input type="text" class="text-input small-input" maxlength="3" size="1" name="tov[]" value="0" onkeyup="this.value = minmax(this.value, 0, 100)"/> 


<script type="text/javascript"> 
function minmax(value, min, max) 
{
    if(parseInt(value) < 0 || isNaN(value)) 
        return 0; 
    else if(parseInt(value) > 100) 
        return 100; 
	  else return value;
}
</script>

Open in new window


Thanks.
0
Comment
Question by:bosscat
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 9

Expert Comment

by:experts1
ID: 37791572
Edit function as below:
<script type="text/javascript"> 
function minmax(value, min, max) 
{
    if(value=="-") return "-";
    if(value=="x" || value=="X") return "X";

    if(parseInt(value) < 0 || isNaN(value)) 
        return 0; 
    else if(parseInt(value) > 100) 
        return 100; 
	  else return value;
}
</script>

Open in new window

0
 
LVL 9

Accepted Solution

by:
experts1 earned 500 total points
ID: 37792216
To clear on backspace mod as follows:
<script type="text/javascript"> 
function minmax(e,value, min, max) 
{
    // Clear on backspace FF etc..
    if (e.which) {
    var chk = e.which;
    if (chk == 08) return "";
       }

    // Clear on backspace IE etc..
    if (e.keyCode) {
    var chk = e.keyCode;
    if (chk == 08) return ""; 
       }
       
    if(value=="-") return "-";
    if(value=="x" || value=="X") return "X";

    if(parseInt(value) < 0 || isNaN(value)) 
        return 0; 
    else if(parseInt(value) > 100) 
        return 100; 
	  else return value;
}
</script>

Open in new window

0
 
LVL 1

Author Comment

by:bosscat
ID: 37792312
thanks!! it works perfectly!
0

Featured Post

Optimize your web performance

What's in the eBook?
- Full list of reasons for poor performance
- Ultimate measures to speed things up
- Primary web monitoring types
- KPIs you should be monitoring in order to increase your ROI

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Boost your ability to deliver ambitious and competitive web apps by choosing the right JavaScript framework to best suit your project’s needs.
Finding original email is quite difficult due to their duplicates. From this article, you will come to know why multiple duplicates of same emails appear and how to delete duplicate emails from Outlook securely and instantly while vital emails remai…
The viewer will learn the basics of jQuery, including how to invoke it on a web page. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery.: (CODE)
Video by: Mark
This lesson goes over how to construct ordered and unordered lists and how to create hyperlinks.

623 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question