If search argument is a string, replaceAll() replaces all occurrences of search with replaceWith, while replace() only the first occurence.The string methods replaceAll(search, replaceWith) and replace(search, replaceWith) work the same way, expect 2 things: 3.1 The difference between replaceAll() and replace() Note that currently, the method support in browsers is limited, and you might require a polyfill. String.replaceAll(search, replaceWith) is the best way to replace all string occurrences in a string 'duck duck go'.replaceAll(' ', '-') replaces all occurrences of ' ' string with '-'.
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