lastIndexOf
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lastIndexOf() Function
• Introduced in version 1.3b48
Finds the index in a string of the last occurrence of a substring in a string. If the substring does not occur in the string then -1 is returned. The index for the string starts at 0.
Usage
lastIndexOf(str, substr)Example
[lastIndexOf("abcde", "c")]Returns 2
[lastIndexOf("abcde", "z")]