Let's take a look at how JavaScript gets the selected text on the page-JS Tutorial-php.cn

Let's take a look at how JavaScript gets the selected text on the page

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Release： 2020-06-20 17:08:52

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Let's take a look at how JavaScript gets the selected text on the page

A little trick introduced here is how to use JavaScript to get the selected text on the page. The most critical JavaScript API is:

event.selection = window.getSelection();

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The selection here is actually an object, but if we use .toString() or force conversion to a string, we The selected text will be obtained.

$(document).ready(function () {
			$(".contenttext").mouseup(function (e) {
				var txt;
				var parentOffset = $(this).offset();
				var x = e.pageX - parentOffset.left;
				var y = e.pageY - parentOffset.top;
				txt = window.getSelection();
				if (txt.toString().length > 1) {
					alert(txt);
				}
			});
		});

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If we place this code into the following page:

<html>
			<head>
				<title>Get selected text with JavaScript</title>
				<meta charset="UTF-8">
				<meta name="viewport" content="width=device-width, initial-scale=1.0">
				<script src="http://www.webhek.com/wordpress/wp-includes/js/jquery/jquery.js" type="text/javascript"></script>
				
			</head>
			<body>
				<p class="contenttext">
					和客户端的 JavaScript 不同的是，PHP 代码是运行在服务端的。如果您在您的服务器上建立了如上例类似的代码，则在运行该脚本后，客户端就能接收到其结果，但他们无法得知其背后的代码是如何运作的。您甚至可以将 WEB 服务器设置成让 PHP 来处理所有的 HTML 文件，这么一来，用户就无法得知服务端到底做了什么。 

					使用 PHP 的一大好处是它对于初学者来说及其的简单，同时也给专业的程序员提供了各种高级的特性。当您看到 PHP 长长的特性列表时，请不要害怕。您可以很快的入门，只需几个小时您就可以自己写一些简单的脚本。 
				</p>
			</body>
		</html>

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When you select part of the text on the page with the mouse, you will get the selected content at the same time. I use it here alert() method displays it.

Lets take a look at how JavaScript gets the selected text on the page

Recommended tutorial: "javascript basic tutorial"

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