indexOf() The indexOf() method, given one argument: a substring to search for, searches the entire calling string, and returns the index of the first occurrence of the specified substring .
Read moreHow do you make indexOf case insensitive?
Yes, it is case-sensitive. You can do a case-insensitive indexOf by converting your String and the String parameter both to upper-case before searching . Note that toUpperCase may not work in some circumstances.
Read moreIs JavaScript case insensitive?
JavaScript is a case-sensitive language . This means that language keywords, variables, function names, and any other identifiers must always be typed with a consistent capitalization of letters.
Read moreHow do you lowercase an array?
To convert all array elements to lowercase:
Read moreIs indexOf case sensitive?
indexOf() methods are all case-sensitive .
Read moreCan you use indexOf for an array?
IndexOf(Array, Object, Int32) Searches for the specified object in a range of elements of a one-dimensional array, and returns the index of its first occurrence . The range extends from a specified index to the end of the array.
Read moreHow do you make an Array not case-sensitive?
To do a case insensitive check if an array contains a string in JavaScript:
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