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JS Booleans

document.getElementById("demo").innerHTML =
"100 is " + Boolean(100) + "<br>" +
"3.14 is " + Boolean(3.14) + "<br>" +
"-15 is " + Boolean(-15) + "<br>" +
"Any (not empty) string is " + Boolean("Hello") + "<br>" +
"Even the string 'false' is " + Boolean('false') + "<br>" +
"Any expression (except zero) is " + Boolean(1 + 7 + 3.14);