How to extract json from html source code using regex?
How to extract json from html source code using regex?
1 answer
@lizzie
It's generally not recommended to use regular expressions to parse HTML or extract JSON data from it as HTML is a complex and nested structure that can be difficult to accurately parse using regex. It's better to use a dedicated HTML parsing library like BeautifulSoup in Python or querying the DOM using javascript in a browser.
If you still want to use regex, you can try the following steps:
- Use a regex pattern to find the JSON data in the HTML source code. For example, a simple pattern to match a JSON object would be ({.*?}).
- Use a regex function in your programming language of choice to extract the matched JSON data from the HTML source code.
- Once you have extracted the JSON data, you can then parse it using a JSON parser like json.loads in Python.
Here's an example using Python to extract and parse JSON data from HTML source code:
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import re
import json
html_source_code = """
<html>
<head></head>
<body>
<script>
var json_data = {"key": "value"};
</script>
</body>
</html>
"""
pattern = r'({.*?})'
match = re.search(pattern, html_source_code, re.DOTALL)
if match:
json_data = json.loads(match.group(1))
print(json_data)
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Please note that this approach may not work for all cases and may not be reliable in the long run due to the complexity of HTML structures. It's always recommended to use a proper HTML parsing library for extracting data from HTML sources.