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The String lastIndexOf() method

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Find out all about the JavaScript lastIndexOf() method of a string

Gives the position of the last occurrence of the string passed as parameter in the current string.

Returns -1 if the search string is not found.

'JavaScript is a great language. Yes I mean JavaScript'.lastIndexOf('Script') //47
'JavaScript'.lastIndexOf('C++') //-1

Also see indexOf().

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