QuickBrownFox | ORM independent RDB fixture data generator | Object-Relational Mapping library

I have a string which contains multiple words. I have a phrase that should be replaced. However, there are multiple very similar phrases that should be replaced.

Here are strings that should be replaced (removed):

• "fox jumps over the lazy dog"
• "fox jumps over the lazy cat"
• "fox jumpa over the lazy cat"
• "fox jumpaoverthe lazy cat" (meaning there could be missing spaces between words)

• case insensitive, global

  var str = "The quick brown fox jumpa over the lazy dog"; // result would be "The quick brown "

  str = "The quick brown fox jump over the lazy dog"; // result would be "The quick brown "

  str = "The quick brown fox jump over the lazy cat"; // result would be "The quick brown "

  str = "The quick brown fox jumpa over the lazy cat"; // result would be "The quick brown "

  str = "The quickbrownfoxjumpaoverthe lazy cat"; // result would be "The quick brown "

My try doesn't work: