I would like to know how to read content from other web pages using just javascript or some library.
For example, from a remote news site, in the case: www.terra.com.br.
And I would like to create a webapp to read the latest news presented on this page, which does not have RSS and etc.
I know of the problems that could occur if the pages I'm feeding me change the layout or anything.
Would you have any way to do this?
You can directly make an AJAX request to the server, like this:
xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
var html = xmlhttp.responseText;
processPage(html);
}
}
xmlhttp.open("GET", "http://www.terra.com.br/", true);
xmlhttp.send();
Note that depending on the server you may have problems with cross-origin requests. One simple way to circumvent this is to use a service like whateverorigin.org . In this case it looks like this:
xmlhttp.open("GET", "http://whateverorigin.org/get?url=" +
encodeURIComponent("http://www.terra.com.br/"), true);