使用Javascript更改td元素文本
我正在编写html文件的代码,它将显示36000个抛出的骰子的每个骰子总和的数量。我写了代码,一切看起来都很好,我打印了每个总和的数字,并且得到了数字,但是当我尝试将它们放入td元素内时,我在表格中看不到任何东西。我搜索了*和谷歌和所有相同的事情,但它不工作。这里是我的代码:使用Javascript更改td元素文本
<!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,但似乎没有工作。为什么它不起作用?
我不知道这是否帮助,但我使用谷歌浏览器在Mac OS X
使用windows.onload功能,以确保HTML被加载:
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];
};
感谢Bojan它的工作 – 2013-03-18 09:39:20
很高兴我可以帮助:) – 2013-03-18 09:40:24
你的JS之前运行DOM已准备就绪。把你的脚本中window.onload
再试,
<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>
它没有负载工作,但它与onload – 2013-03-18 09:38:40
工作对不起,mybad这是一个错字。它只是'onload'。 – 2013-03-18 09:40:06
尝试像
for(var i = 0; i <sums.length; i++){
document.getElementById("sum" + (i + 2)).innerHTML = sums[i];
}
演示:Fiddle
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];
});
第一件事:你的开关简化为: '总和[总和-2] ++'。这将有助于可读性。 – benzonico 2013-03-18 09:30:18
将您的脚本标记置于您正在修改的元素之后(就像在关闭