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<!DOCTYPE html> <html lang="en-US"> <body> <h1>JSON Convert all values to lowercase</h1> <button onclick="myFunction()">Click Me</button> <script> var data = [ { "name": "Mike", "age": 24, "country": "England" }, { "name": "Jade", "age": 22, "country": "Mexico" } ] function myFunction(){ for(var i = 0; i < data.length; i++){ for (var key in data[i]) { if(typeof data[i][key] == "string"){ data[i][key] = data[i][key].toLowerCase(); } } } console.log(data); } </script> <p><strong>Note</strong>: Click on the button and check your console</p> </body> </html>
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