RegexpGarden

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let garden = "Rose\tRosemary\tRose\tRose\t

Primrose\tRose\tRosemary\t

Primrose\tRosemary\tRose\t

Rose";

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garden = garden

.replace(//gi, "Blackberry");

Lesson 37 / 42

Lesson task •

Replace with blackberry all the roses that are directly following rose

Positive Lookbehind

/(?<=y)x/ matches "x" only if it is directly following "y"

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console.log("foo foo foo foo 42".replace(/(?<=foo\s*)foo/gi, "bar")) // foo bar bar bar 42

console.log("foo foo foo 42".replace(/(?<=foo\s*)foo/gi, "bar")) // foo bar bar 42

console.log("foo foo 42".replace(/(?<=foo\s*)foo/gi, "bar")) // foo bar 42

console.log("foo 42".replace(/(?<=foo\s*)foo/gi, "bar")) // foo 42