function run() {
var c1 = document.getElementById('area').value;
var d1 = document.getElementById('result');
d1.innerHTML = getPostLink(c1);
}
/**
* getPostLink
*
* https://jsfiddle.net/
*
* Get a direct link to your facebook posts by parsing "embed post" code.
*/
function getPostLink(textBlock) {
this.textBlock = textBlock;
var substring1 = textBlock.split("?");
var substring2 = substring1[1].split("&");
var substring3 = substring2[0].replace("href=", "");
var substring4 = substring3.replace(/%3A/g, ":");
var substring5 = substring4.replace(/%2F/g, "/");
return substring5;
}
<!DOCTYPE html>
<body>
<form id="form">
<div>
<textarea id="area" cols="50" rows="5"></textarea>
<input type="button" value="Get Link" onclick="run()" />
<br />
<p id="result">Result</p>
</div>
</form>
</body>