(Tested using Chrome 44)
Desired behaviour: Make XHR request, put result in text area, select text, and copy to clipboard.
Actual behaviour: On successful XHR request, puts the result in text area and selects it, but fails to copy result to clipboard. But if I initiate the copy outside of the XHR callback, it works.
Example html page:
var selectAndCopy = function() {
// Select text
var cutTextarea = document.querySelector('#textarea');
cutTextarea.select();
// Execute copy
var successful = document.execCommand('copy');
var msg = successful ? 'successful' : 'unsuccessful';
console.log('Cutting text command was ' + msg);
};
var fetchCopyButton = document.querySelector('#fetch_copy');
fetchCopyButton.addEventListener('click', function(event) {
var xhr = new XMLHttpRequest();
xhr.open('get', 'http://httpbin.org/ip');
xhr.onreadystatechange = function() {
if (xhr.readyState === 4) {
if (xhr.status === 200) {
// Set text
var textarea = document.querySelector('#textarea');
textarea.value = xhr.responseText;
selectAndCopy();
}
}
};
xhr.send();
});
var copyButton = document.querySelector('#copy');
copyButton.addEventListener('click', function(event) {
selectAndCopy();
});
<html>
<head>
</head>
<body>
<p>
<textarea id="textarea">Hello, I'm some text!</textarea>
</p>
<p>
<button id="fetch_copy">Fetch Data and Copy Textarea</button>
<button id="copy">Copy Textarea</button>
</p>
</body>
</html>
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