Javascript - If Last Character of a URL string is "+" then remove it...How?

Question

This is a continuation from an existing question. Javascript - Goto URL based on Drop Down Selections (continued!)

I am using dropdown selects to allow my users to build a URL and then hit "Go" to goto it.

Is there any way to add an additional function that checks the URL before going to it?

My URLs sometimes include the "+" character which I need to remove if its the last character in a URL. So it basically needs to be "if last character is +, remove it"

This is my code:

$(window).load(function(){
    $('form').submit(function(e){
        window.location.href = 
            $('#dd0').val() +
            $('#dd1').val()+
            $('#dd2').val()+
            $('#dd3').val();
        e.preventDefault();
    });
});

stackoverflow.com/questions/280634/endswith-in-javascript/… almost exact duplicate — Kevin
– Kevin, Commented Jun 6, 2011 at 14:33

Matt Ball · Accepted Answer · 2011-06-06 14:33:28Z

42

var url = /* whatever */;

url = url.replace(/\+$/, '');

For example,

> 'foobar+'.replace(/\+$/, '');
  "foobar"

answered Jun 6, 2011 at 14:33

Matt Ball

361k102 gold badges655 silver badges725 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Jon · Accepted Answer · 2011-06-06 15:52:04Z

36

function removeLastPlus (myUrl)
{
    if (myUrl.substring(myUrl.length-1) == "+")
    {
        myUrl = myUrl.substring(0, myUrl.length-1);
    }

    return myUrl;
}

$(window).load(function(){
    $('form').submit(function(e){
        var newUrl = $('#dd0').val() +
            $('#dd1').val()+
            $('#dd2').val()+
            $('#dd3').val();
        newUrl = removeLastPlus(newUrl);
        window.location.href = newUrl;
        e.preventDefault();
    });
});

edited Jun 6, 2011 at 15:52

answered Jun 6, 2011 at 14:34

Jon

2,5424 gold badges21 silver badges23 bronze badges

13 Comments

maerics Over a year ago

What if the URL ends with more than one plus symbol, say three in a row?

Matt Ball Over a year ago

@maerics the OP does not seem to be asking about this case.

maerics Over a year ago

Just playing devil's advocate, from reading OP's code it occurred to me that "dd[0-3]" could contain only plus symbols, but I suppose I'm just being difficult =)

Zach Nicodemous Over a year ago

I'm not entirely sure how to merge this code with my code. Is it possible?

Jon Over a year ago

Are you trying to check each of these or just all of them together? $('#dd0').val() + $('#dd1').val()+ $('#dd2').val()+ $('#dd3').val()

|

Black Mamba · Accepted Answer · 2022-01-25 12:59:45Z

8

Found another solution using str.endsWith("str")

var str = "Hello this is test+";
if(str.endsWith("+")) {
  str = str.slice(0,-1);
  console.log(str)
}
else {
  console.log(str);
}

Also Matt Ball's Replace method looks good. I've updated it to handle the case when there are multiple + at the end.

let str = "hello+++++++++";
str = str.replace(/\++$/, '');
console.log(str);

edited Jan 25, 2022 at 12:59

answered Dec 21, 2017 at 17:44

Black Mamba

15.8k7 gold badges94 silver badges113 bronze badges

Comments

dpmattingly · Accepted Answer · 2011-06-06 14:37:19Z

-1

<script type="text/javascript">
  function truncate_plus(input_string) {
    if(input_string.substr(input_string.length - 1, 1) == '+') {
      return input_string.substr(0, input_string.length - 1);
    }
    else
    {
      return input_string;
    }
  }
</script>

answered Jun 6, 2011 at 14:37

dpmattingly

1,3411 gold badge7 silver badges11 bronze badges

1 Comment

Matt Ball Over a year ago

Why use substr() and not charAt() to retrieve the last character of a string?

Mfoo · Accepted Answer · 2011-07-04 15:07:54Z

-1

$(window).load(function(){
    $('form').submit(function(e){
        var newUrl = $('#dd0').val() +
            $('#dd1').val()+
            $('#dd2').val()+
            $('#dd3').val();
        newUrl = newUrl.replace(/\+$/, '');
        window.location.href = newUrl;
        e.preventDefault();
    });
});

Just seems easier.

answered Jul 4, 2011 at 15:07

Mfoo

3,7841 gold badge18 silver badges11 bronze badges

Comments

givemesnacks · Accepted Answer · 2015-09-29 23:05:26Z

-1

function removeLastPlus(str) {
  if (str.slice(-1) == '+') {
    return str.slice(0, -1);  
  }
  return str;
}

answered Sep 29, 2015 at 23:05

givemesnacks

3364 silver badges12 bronze badges

Collectives™ on Stack Overflow

Javascript - If Last Character of a URL string is "+" then remove it...How?

6 Answers 6

Comments

13 Comments

Comments

1 Comment

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

6 Answers 6

Comments

13 Comments

Comments

1 Comment

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related