js last index of split code example

Example 1: javascript split get last element

a = "hello.dear.friends"
a.split(".").pop()
> "friends"

Example 2: js omit last string

"somestring0".slice(0, -1)
// "somestring"

Example 3: js last index of

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