1.点击显示内容按钮将book中的标题,作者,定价显示到表格中对应字段上
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<script src="https://cdn.bootcss.com/jquery/2.2.4/jquery.min.js"></script>
<title>json</title>
</head>
<body>
<table>
<tr>
<td>标题:</td>
<td><input type="text" id='title'></td>
</tr>
<tr>
<td>作者:</td>
<td><input type="text" id='author'></td>
</tr>
<tr>
<td>定价:</td>
<td><input type="text" id='price'></td>
</tr>
<tr>
<td><input type="button" value="显示内容" id="btn"></td>
</tr>
</table>
</body>
</html>
<script>
$(document).ready( function () {
##定义book对象
var book = {
'title':'python',
'author':'tom',
'price':'200',
};
##点击按钮后,将book中键对应的值显示至表格中
$('#btn').click( function () {
$('#title').val(book.title);
$('#author').val(book.author);
$('#price').val(book.price);
});
</script>
2.点击按钮将字符串转换为json对象并显示至文本框中
<script>
$('#btnparse').click( function () {
var book='{"title":"flask","author":"nancy","price":"300"}'; ##声明字符串类型
var jsonbook=$.parseJSON(book); ##将字符串转换为json
$('#title').val(book.title);
$('#author').val(book.author);
$('#price').val(book.price);
});
</script>
3.点击按钮将城市载入至下拉框中
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<script src="https://cdn.bootcss.com/jquery/2.2.4/jquery.min.js"></script>
<title>json</title>
</head>
<body>
<table>
<tr>
<td>城市:</td>
<td><select name="city" id="city">
</select></td>
</tr>
</table>
<button id="loadcity">载入城市</button>
</body>
</html>
<script>
$('#loadcity').click( function () {
var cities =[
{'id':1,'name':'北京'},
{'id':2,'name':'上海'},
{'id':3,'name':'广州'},
];
$('#city').empty(); ##清空city下拉框中的内容
$.each( cities,function (i,city) { ##i为索引,city为每个遍历出的对象
$('#city').append('<option value="'+city.id+'">'+city.name+'</option>'); ##每遍历出一个对象添加内容
});
});