/TypeScript/How to use indexOf in typesript

How to use indexOf in typesript

var array = [2, 9, 9];
array.indexOf(2);     // 0
array.indexOf(7);     // -1
array.indexOf(9, 2);  // 2
array.indexOf(2, -1); // -1
array.indexOf(2, -3); // 0

Source: developer.mozilla.org

Similar codes

1 vote204 views1 answer
Advantages of automation
TypeScript
0 vote223 views1 answer
No corners in broder css
TypeScript
-3 votes211 views3 answers
Ts warning Could not find a declaration file for module but runs
TypeScript
9 votes223 views6 answers
Angular reload component
TypeScript
13 votes185 views7 answers
Lua print table contents
TypeScript
0 vote208 views1 answer
If image is broken show alternative image angular
TypeScript
0 vote206 views2 answers
Convert java to typescript
TypeScript
4 votes274 views2 answers
Initialize empty array typescript
TypeScript
0 vote232 views1 answer
Tensorflow 1.15 doesn't exists within pip instal
TypeScript
5 votes208 views1 answer
Extends vs implements java
TypeScript