/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

0 vote136 views1 answer
2 counts of IllegalAnnotationExceptions
TypeScript
2 votes141 views3 answers
Module not found: Error: Can't resolve 'core-js/es7/reflect'
TypeScript
0 vote150 views1 answer
How to check that tuple A contains all elements of tuple B python?
TypeScript
0 vote138 views1 answer
The following TestContainer was not found
TypeScript
0 vote142 views1 answer
Dart exit loop
TypeScript
1 vote156 views2 answers
Dart clone list
TypeScript
1 vote145 views1 answer
Google sheets concatenate 3 values
TypeScript
0 vote145 views1 answer
Paginator
TypeScript
3 votes131 views3 answers
Import images angular
TypeScript
11 votes103 views1 answer
Check open ports windows
TypeScript