Question

我试图将它放在哪里，如果一个函数运行并定义变量，另一个函数将能够重新组合该函数。我对Javascript有点新意，所以我的代码可能只是一堆乱七八糟。

function next() {
    var random = Math.floor(Math.random() * 15)
    document.getElementById("image").src = picture[random];
    console.log(random);
}

function who() {
    var thing = things[random];
    var text = document.getElementById("am").innerHTML = "I am " + thing + ".";
    console.log(text);
}

Answer 1

像这样：

var random;

function next() {
    random = Math.floor(Math.random() * 15);
    document.getElementById("image").src = picture[random];
    console.log(random);
}

function who() {
    var thing = things[random];
    var text = document.getElementById("am").innerHTML = "I am " + thing + ".";
    console.log(text);
}

Answer 2

首先定义随机变量，然后将其发送到函数，就像这样;

var random = Math.floor(Math.random() * 15);

next(random);
who(random);

function next(random) {

    document.getElementById("image").src = picture[random];
    console.log(random);
}

function who(random) {
    var thing = things[random];
    var text = document.getElementById("am").innerHTML = "I am " + thing + ".";
    console.log(text);
}

通过JavaScript中的函数传递变量

2 个答案: