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How to write JS 5-second countdown code? The time should be displayed on the screen in real time.

< meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/>?

JS simple code to implement a 60-second countdown (recommended )?

var?countdown=60;?

function?settime(val )?{?

if?(countdown?==?0)?{?

val.removeAttribute("disabled");?

val. value="Get verification code for free";?

countdown?=?5;?

}?else?{?

val.setAttribute("disabled ",?true);?

val.value="Resend("?+?countdown?+?")";?

countdown--;?

setTimeout(function()?{?

settime(val)?

},1000)?

< p>}?

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