如何在javascript中的两个输入之间留一个空格？

var input1 = "Hello";
var input2 = "World";
var result = input1 + " " + input2;
console.log(result);  // 输出 "Hello World"

var input1 = "Hello";
var input2 = "World";
var result = `${input1} ${input2}`;
console.log(result);  // 输出 "Hello World"