按下按鈕更改行爲？

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函數？

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>