JavaScript String includes() Method

includes()Method to determine if one string can be found in another string.

If the string contains a character, the includes() method will returntrue,Otherwise, it returnsfalse.

Note:This method is case-sensitive.

Syntax:

string.includes(searchValue, start)

Example

var str = 'Air Pollution is introduction of chemicals to the atmosphere';
str.includes('Pollution39;);　　　//　true

The numbers in the table specify the first browser version that fully supports the include() method:

Method
includes()	41	40	Yes	9	12

Parameter	Description
searchValue	(Required) The string to be searched in this string
start	(Optional) Start searching in the stringposition of searchValue(Default is 0)

Return value:	If the search string is found at any position within the given stringtrue;otherwisefalse
JavaScript version:	ECMAScript 6

Check if the string contains "Air", from position2Start searching:

Example

var str = 'Air Pollution is introduction of chemicals to the atmosphere';
str.includes('Air',　2);　　　//　false