Converting Fields to URL Friendly Fields: Magic JavaScript

Usage

Add data-mjf="s2lcus" data-mjf_s2lcus="SLAVE_FIELD_ID" id="FIELD_NAME" to your <input> or <textarea> tag.
Add <script type="text/javascript">$m.wand.s2lcus = true;</script> inside your <body> tag.

Example

Text Field
The first field will dump its lowercased, URL friendly contents into the second field

Notes

Multiple underscores in a row are replaced with a single underscore.
Leading and trailing underscores are stripped.

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