我需要使用生成的JSON数据填充表单。 Page rangen.php生成一个名为$student
的数组,然后将其编码为JASON。
<?php
// Randomly generate data for a student and return it as JSON data
// possible random first names
$firstname = array("Kevin", "John", "Sally", "Larissa",
"Zhang", "Li", "Ying", "Wang",
"Nayla", "Nawal", "Abdul", "Yasin");
// possible random last names
$lastname = array("Browne", "Black", "Smith", "Yendt",
"Wei", "Fang", "Patel", "Lee",
"Abaza", "Shadid", "Hatem", "Hassin");
// random generation of tuition
$tuition = rand(2800, 7956);
// random generation of a student id
$studentid =
"0" . rand(0, 9) . rand(0,9) . rand(0,9) . rand(0,9) .
rand(0,9) . rand(0,9) . rand(0,9) . rand(0,9);
// possible payment methods
$paymentmethods = array("Credit", "Debit", "Bitcoin");
// create random student based on arrays, randomness
$student =
array(
"firstname" => $firstname[rand(1,count($firstname)) - 1],
"lastname" => $lastname[rand(1, count($lastname)) - 1],
"tuition" => $tuition,
"studentid" => $studentid,
"method" => $paymentmethods[rand(1, count($paymentmethods)) - 1]
);
// send back a student as JSON data
echo json_encode($student);
?>
页面form.php使用$.post()
向rangen.php发出AJAX请求,然后将表单设置为生成的值,我使用.val()
来执行此操作。单击Random
按钮可调用该功能。
$(document).ready( function () {
$("#rand").click(
function () {
var student = $.post("rangen.php", {"firstname" : "$firstname", "lastname" : "$lastname",
"tuition" : "$tuition", "studentid" : "$studentid", "method" : "$paymentmethods"},
function(data){
for(/*subject in data*/var i=0; i<data.length; i++){
$("#name1").val(data[0]);
$("#name2").val(data[1]);
$("#id_1").val(data[3]);
$("#tuition_1").val(data[2]);
$("#payment_1").val(data[4]);
}
},
"json"); //Stores the requested JSON data.
console.log(student);
}
)
}
);
使用console.log()
显示请求已通过,但当我尝试设置表单值时没有任何反应。
<form action="form.php" method="post" id="payment_form">
First Name <br>
<input type="text" name="fname" id="name1"> <br>
Last Name <br>
<input type="text" name="lname" id="name2"> <br>
Student ID <br>
<input type="text" name="student_id" id="id_1"> <br>
Tuition <br>
<input type="text" name="tuition" id="tuition_1"> <br>
Payment Method <br>
<select name="payment" id="payment_1">
<option value="Credit">Credit</option>
<option value="Debit">Debit</option>
<option value="Bitcoin">Bit Coin</option>
</select> <br>
<input type="submit" value="Submit">
<input type="button" value="Random" id="rand">
<input type="button" onclick="log()" value="Log">
</form>
答案 0 :(得分:0)
在这种情况下,data
是一个需要data["studentid"]
或data.studentid
访问的关联数组,不需要for循环。
$(document).ready( function () {
$("#rand").click(
function () {
var student = $.post("rangen.php", {"firstname" : "$firstname", "lastname" : "$lastname",
"tuition" : "$tuition", "studentid" : "$studentid", "method" : "$paymentmethods"},
function(data){
//for(/*subject in data*/var i=0; i<data.length; i++){
$("#name1").val(data["firstname"]);
$("#name2").val(data["lastname"]);
$("#id_1").val(data["studentid"]);
$("#tuition_1").val(data["tuition"]);
$("#payment_1").val(data["method"]);
//}
},
"json"); //Stores the requested JSON data.
console.log(student);
}
)
}
);