英文:
Scrape data from script tag by cheerio
问题
我如何从这样的字符串中提取数据
<script type="application/json" class="js-react-on-rails-component" data-component-name="ItemPriceHeading">
{
"price":"29.0",
"discountedPrice":null,
"offerPrice":null,
"totalPrice":"29.0",
"currency":"PLN"
}
</script>
我需要提取"price"和"currency"的值，但我不知道如何做。
我可以提取所有字符串，但如何提取仅选择的参数？
英文:
How can I scrape data from string like this
<script type="application/json" class="js-react-on-rails-component" data-component-name="ItemPriceHeading">
{
"price":"29.0",
"discountedPrice":null,
"offerPrice":null,
"totalPrice":"29.0",
"currency":"PLN"
}
</script>
I need to scrape "price" and "currency" values, but I can't understand how to do it.
I can scrape all strings, but how do I extract only selected parameters?
答案1
得分: 1
你可以使用cheerio仅选择<script>标签，然后获取文本并解析它，就像JSON一样：
这是一个示例：
const cheerio = require("cheerio");
const $ = cheerio.load(
`<script type="application/json" class="js-react-on-rails-component" data-component-name="ItemPriceHeading">{"price":"29.0","discountedPrice":null,"offerPrice":null,"totalPrice":"29.0","currency":"PLN"}</script>`
);
const myJSON = JSON.parse(
$('script[data-component-name="ItemPriceHeading"]').text()
);
console.log(myJSON);
myJSON变量应该等于：
{
price: '29.0',
discountedPrice: null,
offerPrice: null,
totalPrice: '29.0',
currency: 'PLN'
}
英文:
You can just select the <script> tag with cheerio and then get the text and parse it like json:
Here is an example:
const cheerio = require("cheerio");
const $ = cheerio.load(
`<script type="application/json" class="js-react-on-rails-component" data-component-name="ItemPriceHeading">{"price":"29.0","discountedPrice":null,"offerPrice":null,"totalPrice":"29.0","currency":"PLN"}</script>`
);
const myJSON = JSON.parse(
$('script[data-component-name="ItemPriceHeading"]').text()
);
console.log(myJSON);
myJSON variable should be equal to:
{
price: '29.0',
discountedPrice: null,
offerPrice: null,
totalPrice: '29.0',
currency: 'PLN'
}
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