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JavaScript 经典实例:第三版
book

JavaScript 经典实例:第三版

by Adam D. Scott, Matthew MacDonald, Shelley Powers
September 2022
Intermediate to advanced
585 pages
8h 17m
Chinese
China Electric Power Press Ltd.
Content preview from JavaScript 经典实例:第三版
获取远程数据
361
JSON
有一些限制:字符串必须使用双引号,而且字符串中不能有十六进制
值和制表符。
13.6
获取及解析
XML
13.6.1
问题
你需要获取远程
XML
文件,并解析文件内容。
13.6.2
方案
使用
fetch
DomParser API
DomParser API
提供了以
XML
解析字符串的能力。
首先,使用
fetch
请求
XML
文件。下述示例请求纽约时报首页的
XML
订阅源。
const
url = 'https://rss.nytimes.com/services/xml/rss/nyt/HomePage.xml';
async
function
fetchAndParse() {
const
response = await fetch(url);
const
data = await response.text();
console.log(data);
}
fetchAndParse();
然后,使用
DOMParser
解析返回的
XML
字符串,再使用
DOM
方法查询文档中的数据。
const
url = 'https://rss.nytimes.com/services/xml/rss/nyt/HomePage.xml';
async
function
fetchAndParse() {
const
response = await fetch(url);
const
data = await response.text();
const
parser =
new
DOMParser(); ...
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Publisher Resources

ISBN: 9787519869601