我需要从变量中获取值，并将set设置为字符串

Question

var number = +document.getElementById("tall1").value;
document.getElementById("knapp").onclick = doSomething;

function doSomething(){
    var color = document.getElementById("graf1");
    farge.style.height = number + "px";}

如何从var编号中获取值并将其设置为高度？

Answer 1

我认为您应该重新订购代码。

document.getElementById("knapp").onclick = doSomething;

function doSomething(){
    var number = +document.getElementById("tall1").value;
    var color = document.getElementById("graf1");
    farge.style.height = number + "px";
}