如何將var傳遞給getElementById？

Question

function editar(clicked_id){ 
var currentID = clicked_id; 
alert(clicked_id); 
} 

我想將var currentID傳遞到getElementById

var tituloAgain = document.getElementById(clicked_id).value; 
console.log(tituloAgain); 

Answer 1

可以移動currentID定義的功能之外，使之成爲全局變量。然後，你可以將其指定這樣的函數內的值：

var currentID; 
function editar(clicked_id){ 
    currentID = clicked_id; 
    alert(clicked_id); 
} 
var tituloAgain = document.getElementById(currentID).value; 
console.log(tituloAgain);