How can I execute a function on pressing the enter key in an field?

by

You can use this:

var wage = document.getElementById("wage");
wage.addEventListener("keydown", function (e) {
    if (e.code === "Enter") {  //checks whether the pressed key is "Enter"
        validate(e);
    }
});

function validate(e) {
    var text = e.target.value;
    //validation of the input...
}

Live demo here

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