showing results for - "lastindexof 28 29 javascript"
Jacopo
11 Oct 2019
1const str = "Users/Edit/12345";
2let idx = str.lastIndexOf("/"); // returns 10
3idx = str.lastIndexOf("x"); // returns -1
4
5idx = str.lastIndexOf("Edit") // returns 6
6idx = str.lastIndexOf("edit") // returns -1 -- case sensitive
7
8// add "from" parameter
9// the search happens backwards, starting at the provided from parameter
10idx = str.lastIndexOf("s"); // returns 4
11idx = str.lastIndexOf("s", 3); // returns 1
12
Helena
29 Jun 2017
1'canal'.lastIndexOf('a');     // retorna 3
2'canal'.lastIndexOf('a', 2);  // retorna 1
3'canal'.lastIndexOf('a', 0);  // retorna -1
4'canal'.lastIndexOf('x');     // retorna -1
5'canal'.lastIndexOf('c', -5); // retorna 0
6'canal'.lastIndexOf('c', 0);  // retorna 0
7'canal'.lastIndexOf('');      // retorna 5
8'canal'.lastIndexOf('', 2);   // retorna 2
9
Earnest
29 Oct 2019
1var numbers = [2, 5, 9, 2];
2numbers.lastIndexOf(2);     // 3
3numbers.lastIndexOf(7);     // -1
4numbers.lastIndexOf(2, 3);  // 3
5numbers.lastIndexOf(2, 2);  // 0
6numbers.lastIndexOf(2, -2); // 0
7numbers.lastIndexOf(2, -1); // 3
Frida
13 Nov 2020
1string.lastIndexOf("subString")
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