Javascript 动态填充JSON数组
每次按下按钮后,我都会尝试动态填充json数组。我的目标是稍后在txt文件中保护该数组,但这是另一个故事,为此我在W3C页面上找到了一些示例 这是我目前的代码:Javascript 动态填充JSON数组,javascript,arrays,json,dynamic,Javascript,Arrays,Json,Dynamic,每次按下按钮后,我都会尝试动态填充json数组。我的目标是稍后在txt文件中保护该数组,但这是另一个故事,为此我在W3C页面上找到了一些示例 这是我目前的代码: enter <html> <body> <table> <tr> <td><label>Subject: <input id="subject" type="text" /></label></td>
enter
<html>
<body>
<table>
<tr>
<td><label>Subject: <input id="subject" type="text" /></label></td>
<td><label>Semester: <input id="semester" type="text" /></label></td>
<td><label>Name: <input id="name" type="text" /></label></td>
</tr>
<tr>
<td>
<label>Question: <label>
</td>
<td colspan="2">
<textarea id="question" style="width:512px;height:100px"></textarea>
</td>
</tr>
<tr>
<td>
<label>Answer 1: <label>
</td>
<td colspan="2">
<textarea id="Answer1" style="width:512px;height:100px"></textarea>
</td>
</tr>
<tr>
<td>
<label>Answer 2: <label>
</td>
<td colspan="2">
<textarea id="Answer2" style="width:512px;height:100px"></textarea>
</td>
</tr>
<tr>
<td>
<label>Answer 3: <label>
</td>
<td colspan="2">
<textarea id="Answer3" style="width:512px;height:100px"> </textarea>
</td>
</tr>
<tr>
<td>
<label>Answer 4: <label>
</td>
<td colspan="2">
<textarea id="Answer4" style="width:512px;height:100px"> </textarea>
</td>
</tr>
<tr>
<td></td>
<td><button onclick="saveInputInArray()">Save in Array</button></td>
<td></td>
</tr>
</table>
<script type='text/javascript'>
var quiz = {
question:[]
};
function saveInputInArray()
{
quiz.question.push({
"Subject" : document.getElementById("subject").value,
"Semester" : document.getElementById("semester").value,
"Name" : document.getElementById("name").value,
"Question" : document.getElementById("question").value,
"Answer1" : document.getElementById("Answer1").value,
"Answer2" : document.getElementById("Answer2").value,
"Answer3" : document.getElementById("Answer3").value,
"Answer4" : document.getElementById("Answer4").value
});
alert("Semester: " + quiz["question"]["semester"]);
}
</script>
</body>
</html>
enter
主题:
学期:
姓名:
问题:
答复1:
答复2:
答复3:
答复4:
保存在数组中
变量测验={
问题:[]
};
函数saveInputArray()
{
测验、提问、推送({
“主题”:document.getElementById(“主题”).value,
“学期”:document.getElementById(“学期”).value,
“名称”:document.getElementById(“名称”).value,
“问题”:document.getElementById(“问题”).value,
“Answer1”:document.getElementById(“Answer1”).value,
“Answer2”:document.getElementById(“Answer2”).value,
“Answer3”:document.getElementById(“Answer3”).value,
“Answer4”:document.getElementById(“Answer4”).value
});
警惕(“学期:+测验[“问题”][“学期]);
}
您的代码很好,只需更改此行:
alert("Semester: " + quiz["question"][0]['Semester']);
考虑到您编写的这行代码
alert("Semester: " + quiz["question"]["semester"]);
我想要这样的:
var quiz = {
question:[]
};
function saveInputInArray()
{
"subject semester name question Answer1 Answer2 Answer3 Answer4".split(" ").forEach(function(id){
quiz.question[id] = document.getElementById(id).value;
});
alert("Semester: " + quiz["question"]["semester"]);
}
您不会“填充json数组”。json是一种传输编码格式。填充javascsript数组,然后在填充完成后将其编码为json。