Question

我一直收到这个错误！这个错误的所有其他帖子都说尝试window.onload = function，但是我只是在页面加载时得到了同样的错误。以下是相关代码：

var word = ["is", "an", "array"];
var people = ["is", "an", "array"];
var word = ["is", "an", "array"];
var num = 1;
var wlong = word.length;
var plong = people.length;
var qlong = Q.length;
var wordPicked = 0;
var peoplePicked = 0;
var QPicked = 0;
function rand() {
    num = Math.random();
}

function pickW() {
    wordPicked = Math.floor(num * wlong);
    document.getElementById(impword).innerHTML = word[wordPicked];
}

function pickP() {
    peoplePicked = Math.floor(num * plong);
    document.getElementById(imppeep).innerHTML = people[peoplePicked];
}

function pickQ() {
    QPicked = Math.floor(num * qlong);
    document.getElementById(impquo).innerHTML = Q[QPicked];
}

通过这个，我试图在每次单击按钮时得到数组的随机元素{对于好奇的调用rand（）;然后pickW（）;}但我继续在这一部分得到错误：

~~~innerHTML = word[wordPicked];

老实说，我只是不知道该怎么做。就像我之前说过的那样，当我转向

pickW() {

到

window.onload = function pickW (){

然后我在页面加载时得到相同的错误，而不是点击。

编辑：

<button onclick="rand() ;pickW() ;">Click Here to choose a Random Word!</button>
<p id="impword">Ready?</p>

＆＃34;无法设置属性＆inner;内部HTML＆＃39; of null＆＃34;按钮单击时出错

1 个答案: