Disable Submit Button If Input Is Empty - jQuery snbutton

snbutton is a super small, cross-browser jQuery plugin that disables the submit button (and changes its content) whenever an input field is empty.

How to use it:

1. Load the snbutton plugin's script snbutton.js after jQuery JavaScript library as this:

<script src="//code.jquery.com/jquery.min.js"></script>
<script src="snbutton.js"></script>

2. Initialize the plugin and we're ready to go.

SNButton.init("snbtn");

3. Add the ID 'snbtn' to the submit button and specify the related input field using data-snnode attribute:

<input id="some-input-field" placeholder="input something">
<button id="snbtn" data-snnode="some-input-field">SUBMIT</button>

4. Change the text when the submit is disabled or enabled.

<input id="some-input-field2" placeholder="input something" />
<button id="snbtn2" data-snnode="some-input-field2">SUBMIT</button>

SNButton.init("snbtn2", {
  enabletext:"OK Submit",
  disabletext:"Input First"
});

5. Apply the plugin to multiple input fields.

SNButton.init("snbtn", {
  fields: ["some1", "some2", "some3"]
});

Change log:

2017-08-27

• allows to apply the plugin to multiple fields.

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