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<html><body><h2>Convert a string into a date object.</h2><p id="demo"></p><script>const text = '{"name":"John", "birth":"1986-12-14", "city":"New York"}';const obj = JSON.parse(text, function (key, value) { if (key == "birth") { return new Date(value); } else { return value; }});document.getElementById("demo").innerHTML = obj.name + ", " + obj.birth; </script></body></html>