case insensitive in javascript pattern code example

Example 1: javascript string search case insensitive

function stringContainsCaseInsensitive(search, subject){
    return subject.toLowerCase().indexOf(search.toLowerCase()) !== -1;
}

stringContainsCaseInsensitive("red","We painted the room red.");//true

Example 2: snentence case capitalisation js

const string = "tHIS STRING'S CAPITALISATION WILL BE FIXED."
const string = string.charAt(0).toUpperCase() + string.slice(1)

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Javascript Example

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