Specify Max Length For Text Fields - jQuery maxLength.js

Specify Max Length For Text Fields - jQuery maxLength.js
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License: MIT
   

Yet another jQuery max length plugin which limits the number of characters allowed to be typed in a text field with a basic character counter. Supports textarea, input field and any inline elements.

How to use it:

1. Wrap your text fields into DIV containers and specify the maximum number of characters using the native maxlength attribute or data-val-length attribute.

<div class="form-group">
  <input
      type="number"
      maxlength="10"
      class="form-control"
  >
</div>

<div class="form-group">
  <span
      data-val-length="parent"
  >
  </span>
  <input
      type="text"
      maxlength="20"
      class="form-control"
  >
</div>

<div class="form-group">
  <textarea maxlength="50" name="" id="" cols="30" rows="10" class="form-control"></textarea>
</div>

2. Insert the jQuery maxLength.js script after jQuery.

<script src="https://unpkg.com/[email protected]/dist/jquery.js"></script>
<script src="jQuery.maxlength.js"></script>

3. Call the function on the wrapper element and the plugin will take care of the rest.

$('div.form-group').maxlength();

4. The generated HTML for the character counter.

<span data-val-length="parent">
  <span class="text-limit">
    <span data-val-length="target">8</span>
    <span data-val-length="max">/20</span>
   </span>
</span>

5. Default plugin options.

$('div.form-group').maxlength({
  valName: '[maxlength]',
  target: '[data-val-length=target]',
  maxTarget: '[data-val-length=max]',
  parent: '[data-val-length=parent]'
});

Change log:

2018-02-20

  • Fixed $val.val() undefined when input is empty

This awesome jQuery plugin is developed by tg0825. For more Advanced Usages, please check the demo page or visit the official website.