我有一个开关，提示询问数据库。如何将不同的案例添加到我拥有的数组中？我有5个数组，但我不知道输入什么作为输入，因为我使用了一个循环来提示。
<html>
<head>
<title>Nested For</title>
<input type="button" value="Start" onclick="Input()">
<script type="text/javascript">
function Input()
for (var i = 1; i < 5; i++) {
for (var b = 0; b <5; i++) {
switch(var b) {
case 1:
contacts[var i] [var b]=prompt ("What is the first name of Customer " + var i + "?";)
break;
case 2:
CustomerId[var i] [var b]=prompt ("what is the Customer Id of the Customer " + var i + "?";)
break;
case 3:
Address[var i] [var b]=prompt ("What is the address of the Customer " + var i + "?";)
break;
case 4:
City[var i] [var b]=prompt ("What is the city that the customer lives in " + var i + "?";)
break;
case 5:
Age[var i] [var b]=prompt ("What is the age of the Cusotmer " + var i + "?";)
break;
}
var database = new Array();
database[0] = new Array();
database[0][0] =
database[0][1] =
database[0][2] =
database[0][3] =
database[0][4] =
database[1] = new Array();
database[1][0] =
database[1][1] =
database[1][2] =
database[1][3] =
database[1][4] =
database[2] = new Array();
database[2][0] =
database[2][1] =
database[2][2] =
database[2][3] =
database[2][4] =
database[3] = new Array();
database[3][0] =
database[3][1] =
database[3][2] =
database[3][3] =
database[3][4] =
database[4] = new Array();
database[4][0] =
database[4][1] =
database[4][2] =
database[4][3] =
database[4][4] =
txtLabel1.value = database[0][0]
txtLabel2.value = database[0][1]
txtLabel3.value = database[0][2]
txtLabel4.value = database[0][3]
txtLabel5.value = database[0][4]
txtLabel6.value = database[1][0]
txtLabel7.value = database[1][1]
txtLabel8.value = database[1][2]
txtLabel9.value = database[1][3]
txtLabel10.value = database[1][4]
txtLabel11.value = database[2][0]
txtLabel12.value = database[2][1]
txtLabel13.value = database[2][2]
txtLabel14.value = database[2][3]
txtLabel15.value = database[2][4]
txtLabel16.value = database[3][0]
txtLabel17.value = database[3][1]
txtLabel18.value = database[3][2]
txtLabel19.value = database[3][3]
txtLabel20.value = database[3][4]
txtLabel21.value = database[4][0]
txtLabel22.value = database[4][1]
txtLabel23.value = database[4][2]
txtLabel24.value = database[4][3]
txtLabel25.value = database[4][4]
}
</script>
<table name="OutputTable">
<tr>
<td>
Name: <input type="text" name="txtLabel1" id="txtLabel1">
</td>
<td>
<input type="text" name="txtLabel2" id="txtLabel2">
</td>
<td>
<input type="text" name="txtLabel3" id="txtLabel3">
</td>
<td>
<input type="text" name="txtLabel4" id="txtLabel4">
</td>
<td>
<input type="text" name="txtLabel5" id="txtLabel5">
</td>
</tr>
<tr>
<td>
Customer Id: <input type="text" name="txtLabel6" id="txtLabel6">
</td>
<td>
<input type="text" name="txtLabel7" id="txtLabel7">
</td>
<td>
<input type="text" name="txtLabel8" id="txtLabel8">
</td>
<td>
<input type="text" name="txtLabel9" id="txtLabel9">
</td>
<td>
<input type="text" name="txtLabel10" id="txtLabel10">
</td>
</tr>
<tr>
<td>
Address: <input type="text" name="txtLabel11" id="txtLabel11">
</td>
<td>
<input type="text" name="txtLabel12" id="txtLabel12">
</td>
<td>
<input type="text" name="txtLabel13" id="txtLabel13">
</td>
<td>
<input type="text" name="txtLabel14" id="txtLabel14">
</td>
<td>
<input type="text" name="txtLabel15" id="txtLabel15">
</td>
</tr>
<tr>
<td>
City: <input type="text" name="txtLabel16" id="txtLabel16">
</td>
<td>
<input type="text" name="txtLabel17" id="txtLabel17">
</td>
<td>
<input type="text" name="txtLabel18" id="txtLabel18">
</td>
<td>
<input type="text" name="txtLabel19" id="txtLabel19">
</td>
<td>
<input type="text" name="txtLabel20" id="txtLabel20">
</td>
</tr>
<tr>
<td>
Age: <input type="text" name="txtLabel21" id="txtLabel21">
</td>
<td>
<input type="text" name="txtLabel22" id="txtLabel22">
</td>
<td>
<input type="text" name="txtLabel23" id="txtLabel23">
</td>
<td>
<input type="text" name="txtLabel24" id="txtLabel24">
</td>
<td>
<input type="text" name="txtLabel25" id="txtLabel25">
</td>
</tr>
</table>
</body>
</html>
答案 0 :(得分：1)
直接访问database数组可能更简单，而不是使用中间数组。您可以大大简化代码：
<script type="text/javascript">
function Input() {
var database = new Array();
for (var i = 1; i <= 5; i++) {
database[i] = new Array();
for (var b = 1; b <= 5; b++) {
switch (b) {
case 1:
database[i][b] = prompt("What is the first name of Customer " + i + "?")
break;
case 2:
database[i][b] = prompt("what is the Customer Id of the Customer " + i + "?")
break;
case 3:
database[i][b] = prompt("What is the address of the Customer " + i + "?")
break;
case 4:
database[i][b] = prompt("What is the city that the customer lives in " + i + "?")
break;
case 5:
database[i][b] = prompt("What is the age of the Cusotmer " + i + "?")
break;
}
}
}
txtLabel1.value = database[0][0]
txtLabel2.value = database[0][1]
txtLabel3.value = database[0][2]
txtLabel4.value = database[0][3]
txtLabel5.value = database[0][4]
txtLabel6.value = database[1][0]
txtLabel7.value = database[1][1]
txtLabel8.value = database[1][2]
txtLabel9.value = database[1][3]
txtLabel10.value = database[1][4]
txtLabel11.value = database[2][0]
txtLabel12.value = database[2][1]
txtLabel13.value = database[2][2]
txtLabel14.value = database[2][3]
txtLabel15.value = database[2][4]
txtLabel16.value = database[3][0]
txtLabel17.value = database[3][1]
txtLabel18.value = database[3][2]
txtLabel19.value = database[3][3]
txtLabel20.value = database[3][4]
txtLabel21.value = database[4][0]
txtLabel22.value = database[4][1]
txtLabel23.value = database[4][2]
txtLabel24.value = database[4][3]
txtLabel25.value = database[4][4]
}
</script>
此外，如果您希望进一步简化代码，可以将文本框的值分配也放在for循环中：
<script type="text/javascript">
function Input() {
var database = new Array();
for (var i = 1; i <= 5; i++) {
database[i] = new Array();
for (var b = 1; b <= 5; b++) {
switch (b) {
case 1:
database[i][b] = prompt("What is the first name of Customer " + i + "?")
break;
case 2:
database[i][b] = prompt("what is the Customer Id of the Customer " + i + "?")
break;
case 3:
database[i][b] = prompt("What is the address of the Customer " + i + "?")
break;
case 4:
database[i][b] = prompt("What is the city that the customer lives in " + i + "?")
break;
case 5:
database[i][b] = prompt("What is the age of the Cusotmer " + i + "?")
break;
}
}
}
var labelCursor = 1;
for (var i in database) {
for (var b in database[i]) {
document.getElementById('txtLabel' + labelCursor).value = database[i][b];
labelCursor++;
}
}
}
</script>