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Scripts: Javascript :: Forms :: Library Article #5

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Limit TextArea Max Characters
By: Erobo Team Member

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Limit the number of Characters an user may enter per textarea.

In this tutorial we will learn how to limit the number of characters you are allowed to enter per textarea. To do this we will use a simple javascript that will be keeping track of the number of characters. Here is an example (100 characters max):

100 characters
To achive this we do the following:

 Code Snippet 1
<script language="JavaScript">

function textCounter(field,  maxlimit) {

     if (field.value.length > maxlimit) // if too long...trim it!
     {
          field.value = field.value.substring(0, maxlimit);
     }

}

</script>


<textarea name="comments" rows="5" cols="20" 

onKeyDown="textCounter(this.form.comments,100);" 

onKeyUp="textCounter(this.form.comments,100);"></textarea>

<div align="center"><small>100 characters</small></div>


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