Javascript Check Substring Present Inside String
Learn how Javascript can Check Substring Present Inside String
Published
Javascript Check Substring Inside String
If we need to check a substring is present inside a string we can easily check using indexOf() function. You can initiate IndexOf call with a string.indexOf(substring). The following example check “an” is present in country name “Japan”.
Examples
message = "This email is confidential"
message.indexOf("confidential")
country = "Japan"
country.indexOf ("an")
countries = ["China", "USA", "Finland", "Germany"]
countries.map(function(item){
return item.indexOf("an")
})