I have used Jsoup library to fetch the metadata from url.
Document doc = Jsoup.connect("http://www.google.com").get(); String keywords = doc.select("meta[name=keywords]").first().attr("content"); System.out.println("Meta keyword : " + keywords); String description = doc.select("meta[name=description]").get(0).attr("content"); Elements images = doc.select("img[src~=(?i)\.(png|jpe?g|gif)]"); String src = images.get(0).attr("src"); System.out.println("Meta description : " + description); System.out.println("Meta image URl : " + src);
But I want to do it in client side using javascript
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Answer
You can’t do it client only because of the cross-origin
issue. You need a server side script to get the content of the page.
OR You can use
https://policies.yahoo.com/us/en/yahoo/terms/product-atos/yql/index.htmYQL
. In this way, the YQL
will used as proxy.
Or you can use https://cors-anywhere.herokuapp.com. In this way, cors-anywhere will used as proxy:
For example:
$('button').click(function() { $.ajax({ url: 'https://cors-anywhere.herokuapp.com/' + $('input').val() }).then(function(data) { var html = $(data); $('#kw').html(getMetaContent(html, 'description') || 'no keywords found'); $('#des').html(getMetaContent(html, 'keywords') || 'no description found'); $('#img').html(html.find('img').attr('src') || 'no image found'); }); }); function getMetaContent(html, name) { return html.filter( (index, tag) => tag && tag.name && tag.name == name).attr('content'); }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <input type="text" placeholder="Type URL here" value="http://www.html5rocks.com/en/tutorials/cors/" /> <button>Get Meta Data</button> <pre> <div>Meta Keyword: <div id="kw"></div></div> <div>Description: <div id="des"></div></div> <div>image: <div id="img"></div></div> </pre>