我正在为html文件编写代码，该代码将显示36000个掷骰子的每个骰子总数。我编写代码，一切似乎都很好，我打印了每个总和的数字，我得到了数字，但是当我尝试将它们放在td元素中时，我在表中看不到任何内容。我在stackoverflow和谷歌上搜索了所有相同的事情，但它没有用。这是我的代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Title</title>
<script type="text/javascript">
<!--
/*
Position #0 : Sum of Dices = 2
Position #1 : Sum of Dices = 3
Position #2 : Sum of Dices = 4
Position #3 : Sum of Dices = 5
Position #4 : Sum of Dices = 6
Position #5 : Sum of Dices = 7
Position #6 : Sum of Dices = 8
Position #7 : Sum of Dices = 9
Position #8 : Sum of Dices = 10
Position #9 : Sum of Dices = 11
Position #10: Sum of Dices = 12
*/
var sums = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
for (var i = 0; i < 36000; i++) {
var dice1 = Math.floor(Math.random() * 6) + 1;
var dice2 = Math.floor(Math.random() * 6) + 1;
var sum = dice1 + dice2;
switch(sum) {
case 2:
sums[0]++;
break;
case 3:
sums[1]++;
break;
case 4:
sums[2]++;
break;
case 5:
sums[3]++;
break;
case 6:
sums[4]++;
break;
case 7:
sums[5]++;
break;
case 8:
sums[6]++;
break;
case 9:
sums[7]++;
break;
case 10:
sums[8]++;
break;
case 11:
sums[9]++;
break;
case 12:
sums[10]++;
break;
default:
break;
}
}
document.getElementById("sum2").innerHTML = sums[0];
document.getElementById("sum3").innerHTML = sums[1];
document.getElementById("sum4").innerHTML = sums[2];
document.getElementById("sum5").innerHTML = sums[3];
document.getElementById("sum6").innerHTML = sums[4];
document.getElementById("sum7").innerHTML = sums[5];
document.getElementById("sum8").innerHTML = sums[6];
document.getElementById("sum9").innerHTML = sums[7];
document.getElementById("sum10").innerHTML = sums[8];
document.getElementById("sum11").innerHTML = sums[9];
document.getElementById("sum12").innerHTML = sums[10];
// -->
</script>
</head>
<body>
<h1>Roll Dice 36,000 Times</h1>
<table border="1">
<th>Sum of Dice</th>
<th>Total Times Rolled</th>
<tr>
<td>2</td>
<td id="sum2"></td>
</tr>
<tr>
<td>3</td>
<td id="sum3"></td>
</tr>
<tr>
<td>4</td>
<td id="sum4"></td>
</tr>
<tr>
<td>5</td>
<td id="sum5"></td>
</tr>
<tr>
<td>6</td>
<td id="sum6"></td>
</tr>
<tr>
<td>7</td>
<td id="sum7"></td>
</tr>
<tr>
<td>8</td>
<td id="sum8"></td>
</tr>
<tr>
<td>9</td>
<td id="sum9"></td>
</tr>
<tr>
<td>10</td>
<td id="sum10"></td>
</tr>
<tr>
<td>11</td>
<td id="sum11"></td>
</tr>
<tr>
<td>12</td>
<td id="sum12"></td>
</tr>
</table>
</body>
</html>
有人说使用innerText和textContent似乎没有用。为什么不起作用？
我不知道这是否有帮助，但我在Mac OS X上使用谷歌浏览器
答案 0 :(得分：14)
使用windows.onload函数确保加载html：
window.onload=function(){
document.getElementById("sum2").innerHTML = sums[0];
document.getElementById("sum3").innerHTML = sums[1];
document.getElementById("sum4").innerHTML = sums[2];
document.getElementById("sum5").innerHTML = sums[3];
document.getElementById("sum6").innerHTML = sums[4];
document.getElementById("sum7").innerHTML = sums[5];
document.getElementById("sum8").innerHTML = sums[6];
document.getElementById("sum9").innerHTML = sums[7];
document.getElementById("sum10").innerHTML = sums[8];
document.getElementById("sum11").innerHTML = sums[9];
document.getElementById("sum12").innerHTML = sums[10];
};
答案 1 :(得分：4)
你的JS在DOM准备好之前运行。将您的脚本放在window.onload内，然后重试，
<script type="text/javascript">
<!--
window.onload = function(){
/*
Position #0 : Sum of Dices = 2
Position #1 : Sum of Dices = 3
Position #2 : Sum of Dices = 4
Position #3 : Sum of Dices = 5
Position #4 : Sum of Dices = 6
Position #5 : Sum of Dices = 7
Position #6 : Sum of Dices = 8
Position #7 : Sum of Dices = 9
Position #8 : Sum of Dices = 10
Position #9 : Sum of Dices = 11
Position #10: Sum of Dices = 12
*/
var sums = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
for (var i = 0; i < 36000; i++) {
var dice1 = Math.floor(Math.random() * 6) + 1;
var dice2 = Math.floor(Math.random() * 6) + 1;
var sum = dice1 + dice2;
switch(sum) {
case 2:
sums[0]++;
break;
case 3:
sums[1]++;
break;
case 4:
sums[2]++;
break;
case 5:
sums[3]++;
break;
case 6:
sums[4]++;
break;
case 7:
sums[5]++;
break;
case 8:
sums[6]++;
break;
case 9:
sums[7]++;
break;
case 10:
sums[8]++;
break;
case 11:
sums[9]++;
break;
case 12:
sums[10]++;
break;
default:
break;
}
}
document.getElementById("sum2").innerHTML = sums[0];
document.getElementById("sum3").innerHTML = sums[1];
document.getElementById("sum4").innerHTML = sums[2];
document.getElementById("sum5").innerHTML = sums[3];
document.getElementById("sum6").innerHTML = sums[4];
document.getElementById("sum7").innerHTML = sums[5];
document.getElementById("sum8").innerHTML = sums[6];
document.getElementById("sum9").innerHTML = sums[7];
document.getElementById("sum10").innerHTML = sums[8];
document.getElementById("sum11").innerHTML = sums[9];
document.getElementById("sum12").innerHTML = sums[10];
}
// -->
</script>
答案 2 :(得分：1)
试试这个：
$(function(){
var sums = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
for (var i = 0; i < 36000; i++) {
var dice1 = Math.floor(Math.random() * 6) + 1;
var dice2 = Math.floor(Math.random() * 6) + 1;
var sum = dice1 + dice2;
switch(sum) {
case 2:
sums[0]++;
break;
case 3:
sums[1]++;
break;
case 4:
sums[2]++;
break;
case 5:
sums[3]++;
break;
case 6:
sums[4]++;
break;
case 7:
sums[5]++;
break;
case 8:
sums[6]++;
break;
case 9:
sums[7]++;
break;
case 10:
sums[8]++;
break;
case 11:
sums[9]++;
break;
case 12:
sums[10]++;
break;
default:
break;
}
}
document.getElementById("sum2").innerHTML = sums[0];
document.getElementById("sum3").innerHTML = sums[1];
document.getElementById("sum4").innerHTML = sums[2];
document.getElementById("sum5").innerHTML = sums[3];
document.getElementById("sum6").innerHTML = sums[4];
document.getElementById("sum7").innerHTML = sums[5];
document.getElementById("sum8").innerHTML = sums[6];
document.getElementById("sum9").innerHTML = sums[7];
document.getElementById("sum10").innerHTML = sums[8];
document.getElementById("sum11").innerHTML = sums[9];
document.getElementById("sum12").innerHTML = sums[10];
});
答案 3 :(得分：0)
尝试类似
的内容for(var i = 0; i <sums.length; i++){
document.getElementById("sum" + (i + 2)).innerHTML = sums[i];
}
演示：Fiddle