lastindexof() javascript
const str = "Users/Edit/12345";
let idx = str.lastIndexOf("/"); // returns 10
idx = str.lastIndexOf("x"); // returns -1
idx = str.lastIndexOf("Edit") // returns 6
idx = str.lastIndexOf("edit") // returns -1 -- case sensitive
// add "from" parameter
// the search happens backwards, starting at the provided from parameter
idx = str.lastIndexOf("s"); // returns 4
idx = str.lastIndexOf("s", 3); // returns 1
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4.14
7
'canal'.lastIndexOf('a'); // retorna 3
'canal'.lastIndexOf('a', 2); // retorna 1
'canal'.lastIndexOf('a', 0); // retorna -1
'canal'.lastIndexOf('x'); // retorna -1
'canal'.lastIndexOf('c', -5); // retorna 0
'canal'.lastIndexOf('c', 0); // retorna 0
'canal'.lastIndexOf(''); // retorna 5
'canal'.lastIndexOf('', 2); // retorna 2
Thank you!
7
4.14
(7 Votes)
0
3.6
10
var numbers = [2, 5, 9, 2];
numbers.lastIndexOf(2); // 3
numbers.lastIndexOf(7); // -1
numbers.lastIndexOf(2, 3); // 3
numbers.lastIndexOf(2, 2); // 0
numbers.lastIndexOf(2, -2); // 0
numbers.lastIndexOf(2, -1); // 3
Thank you!
10
3.6
(10 Votes)
0
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