如何将var传递给getElementById？

Question

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

我想将var currentID传递到getElementById

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

Answer 1

可以移动currentID定义的功能之外，使之成为全局变量。然后，你可以将其指定这样的函数内的值：

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