RegexpGarden
- Garden Text Representation
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let garden = "Rose\tPrimrose\tRose\tRosemary\tRose";- Code Editor
- Log
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garden = garden.replace(//gi, "Blackberry");Lesson task •
Replace all the roses with blackberries
Word boundary
\b
Likewise we restricted before the regular expressions to match start of string and end of string, we can make regular expressions to match a word boundary:
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console.log("foointhestart endswithfoo foobothsidesfoo foo".replace(/\bfoo/gi, "bar")) // barinthestart endswithfoo barbothsidesfoo bar console.log("foointhestart endswithfoo foobothsidesfoo foo".replace(/foo\b/gi, "bar")) // foointhestart endswithbar foobothsidesbar bar console.log("foointhestart endswithfoo foobothsidesfoo foo".replace(/\bfoo\b/gi, "bar")) // foointhestart endswithfoo foobothsidesfoo bar The word boundary is defined as the transition from any symbol matching \w to any symbol matching \W:
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console.log("foo42".replace(/foo\b/gi, "bar")) // foo42 console.log("foo_".replace(/foo\b/gi, "bar")) // foo_ console.log("foo$".replace(/foo\b/gi, "bar")) // bar$ console.log("foo+-".replace(/foo\b/gi, "bar")) // bar+-