I would like to add below my textarea the length of the written text.
For this purpose I have defined a span
element to write my characters.
However, I currently get the following error:
Uncaught ReferenceError: len is not defined
Find below my viable example:
$(".form-control.description").keyup(this.countCharacters.bind(this)) function countCharacters() { len = $(".form-control.rigDesc").val().length $(".remainChar").html("#" + len); }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet"/> <div class="form-group row" align="left"> <div class="col-7"> <textarea class="form-control rigDesc" rows="4" id="comment" placeholder="Describe..."></textarea> <span class="remainChar"></span> </div> </div>
Any suggestions how to capture the length of the textarea field?
I appreciate your replies!
You are missing the class description
in your textarea
as you have used $(".form-control.description")
in your keyup
event which seeks for the element with class form-control
and description
so you need to add description
class in your textarea
.
$(".form-control.description").keyup(this.countCharacters.bind(this)) function countCharacters() { len = $(".form-control.rigDesc").val().length $(".remainChar").html("#" + len); }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet"/> <div class="form-group row" align="left"> <div class="col-7"> <textarea class="form-control description rigDesc" rows="4" id="comment" placeholder="Describe..."></textarea> <span class="remainChar"></span> </div> </div>
For more accuracy and preventing unintentional error you can use $("textarea.form-control.description")
to make sure the keyup
event is only for textarea
with class form-control
and description
.
$("textarea.form-control.description").keyup(this.countCharacters.bind(this)) function countCharacters() { len = $(".form-control.rigDesc").val().length $(".remainChar").html("#" + len); }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet"/> <div class="form-group row" align="left"> <div class="col-7"> <textarea class="form-control description rigDesc" rows="4" id="comment" placeholder="Describe..."></textarea> <span class="remainChar"></span> </div> </div>
Your code was binding the keyup to the wrong selector. I have fixed that and also ensured that len is a local and not global variable. See below:
$(".form-control").keyup(this.countCharacters.bind(this)) function countCharacters() { var len = $(".form-control.rigDesc").val().length; $(".remainChar").html("#" + len); }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet"/> <div class="form-group row" align="left"> <div class="col-7"> <textarea class="form-control rigDesc" rows="4" id="comment" placeholder="Describe..."></textarea> <span class="remainChar"></span> </div> </div>
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