How to Highlight the First Word Automatically in After Effects

How to highlight the first word in your text layer automatically?

1. Create a text layer.
2. Press Animate – Fill Color – RGB.
3. Expand Advanced property and change Units to Index.
4. Alt-click on the End property and paste an expression below.

var userText = text("ADBE Text Document");

userText.length > 0 ? userText.split(/s|W/)[0].length : 0;