I wanna ask how to get strings data when I highlight the text by mouse. For example when I highlight some text on the website. I should get the text copied to my API automatically. I don't have time to copy-paste. I wanna do it automatically copy and paste when I highlight the text. I have basic knowledge of Js and php.
There isn't any onhighlightext event function or anything like that, but a solution would be to bind the onmouseup event to check if any text is selected. See example for selecting highlighted text here: On Text Highlight Event?
Another part of your question is the copy to clipboard function. Here is a text copy example function, which works for my use cases:
<html>
<head>
</head>
<body>
<button onclick="toClipboard('Some text!')">Copy me</button>
<script>
function toClipboard(str) {
tc = document.createElement('textarea');
tc.value = str;
document.body.appendChild(tc);
tc.select();
document.execCommand('copy');
document.body.removeChild(tc);
};
</script>
</body>
</html>