Using setTimeout to add cooldown time to a button

问题

I try to create an object method called coolDown, when a button is clicked, it will disable the button and unlock it afer cooling time is over.

But when I test it, it will disable the button, but, did not unlock the button after the cooling time is over, why is it?

var btncd = new test();

function test() {
}

test.prototype.coolDown = function() {
    document.getElementById("cd").disabled = "true";
    setTimeout(function() {document.getElementById("cd").disabled = "false";}, 2000);
}

window.onload = function() {
    document.getElementById("cd").onclick = btncd.coolDown;
}

Appreciate for your answer..

回答1:

it should be

document.getElementById("cd").disabled = false; // without ""

Boolean("false"); is evaluated to true

来源：https://stackoverflow.com/questions/36594962/using-settimeout-to-add-cooldown-time-to-a-button