改變按鈕行為？

Question

<input type="button" value="button1" id="go" onclick='funcion()'\ >
<input type="button" value="change" id="change"\ >

當我按下按鈕更改時，如何更改按鈕1中的OnClick功能？

Answer 1

document.getElementById("change").onclick = function() { // when clicking #change
    document.getElementById("go").onclick = function() { // overide the click event listener of #go
        // ...
    }
}

Answer 2

<input type="button" value="button1" id="go" onclick='funcion()'\ >
<input type="button" value="change" id="change" onclick='funcion=newFuncion'\>

<script>
    function funcion() {
        //first action
    }

    function newFuncion() {
        //second action
    }
</script>