<!DOCTYPE html>
<html>
<head>
<style>
table,td {
border: 1px solid black;
}
</style>
</head>
<body>
<p id="p">Click the button to insert new cell(s) at the beginning of the first table row.</p>
<div id="console" style="border-style: dashed;">
length: <input type="text" id="length">
color: <input type="color" id="color">
<br>
<button onclick="myFunction()">Try it</button>
</div>
<br>
<div id="resultArea" style="border-style: dashed;">
<table id="myTable">
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
</tr>
</table>
</div>
<br>
<script>
//constant variables
var x = 0;
var y = 0;
var cursor = 0;
function myFunction() {
var cursorInstant = cursor;
for(var i=cursorInstant; i<(document.getElementById("length").value+cursorInstant); i++){
x = Math.floor(i/12);
y = i%12;
document.getElementById("myTable").rows[x].cells[y].style.backgroundColor = document.getElementById("color").value;
cursor = i+1;
}
}
</script>
</body>
</html>
所以我输入了一个数字，并且有一个for循环
我想要的是：当Number = 3时，表示循环从0-2开始。另一个数字输入= 4，用于从3-6的循环。另一个数字输入= 10，用于从7-16的循环。
我的解决方案是我有一个常数（例如A） for循环语句将类似于
for(i=A; i< Number + A< i++){...}
在循环中，A将在某个点递增。
但是由于某种原因，我的循环从A循环到（Number + A）的10倍 我不明白