var n1 = document.getElementById("name1").value;
var n2 = document.getElementById("name2").value;
var n3= ? 我想得到n1+n2(2个都是字符型) 怎么写?
var n2 = document.getElementById("name2").value;
var n3= ? 我想得到n1+n2(2个都是字符型) 怎么写?
var n2 = document.getElementById("name2").value;
var n3= parseInt(n1)+parseInt(n2)
var n2 = document.getElementById("name2").value;
var n3=n1+n2;