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The lastIndexOf() method searches the string from the end to the beginning. The lastIndexOf() method returns the index from the beginning (position 0). The lastIndexOf() method returns -1 if the value is not found.
- JavaScript Strings
JavaScript Strings. The lastIndexOf () Method. lastIndexOf...
- JavaScript Strings
3 lis 2023 · The lastIndexOf () method of String values searches this string and returns the index of the last occurrence of the specified substring. It takes an optional starting position and returns the last occurrence of the specified substring at an index less than or equal to the specified number.
In this tutorial, you'll learn how to use the JavaScript String lastIndexOf() method to locate the last occurrence of a substring in a string.
5 gru 2011 · Using lastIndexOf and substring: var str = "foo/bar/test.html"; var n = str.lastIndexOf ('/'); var result = str.substring (n + 1); lastIndexOf does what it sounds like it does: It finds the index of the last occurrence of a character (well, string) in a string, returning -1 if not found.
JavaScript Strings. The lastIndexOf () Method. lastIndexOf () returns the index of the last occurrence of a specified value in a string. Find the last occurence of "planet":
The lastIndexOf() method returns the last index of occurence of a given substring in the string. Example. // defining a string var str = "Programming"; var substr = "g"; // find last occurrence of "g" in str var result = str.lastIndexOf(substr); console.log(result);
27 cze 2017 · The lastIndexOf () method returns the index within the calling String object of the last occurrence of the specified value, searching backwards from fromIndex. Returns -1 if the value is not found.
