Question

How to check if a string starts with a specified substring in JavaScript

Answer 1

function startsWith(str, substr) {
    return str.toLowerCase().startsWith(substr.toLowerCase());
}

const str = "JavaScript run in WebBrowser";
const substr = "JAVAScript";

if (startsWith(str, substr)) {
    console.log("yes");
} else {
    console.log("no");
}



/*
run:

yes

*/

 

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