极客教程如何使用jQuery禁用复制、粘贴、剪切和右键
通过 “ctrl+c”、”ctrl+v”、”ctrl+x “和鼠标右键，可以从任何地方复制、粘贴和剪切任何东西。它可以被禁用于特定的任务或页面。让我们看看如何禁用剪切、复制、粘贴和右键点击。
它可以通过两种方式进行。
- 通过使用on()方法
- 通过使用keydown()和mousedown()方法
通过使用on()方法：它是jQuery中的一个内置方法。在这个方法的帮助下，我们将能够禁用剪切、复制、粘贴和右键点击选项。
- 语法:
$(“selector”).on(event, function)
- 示例:
<!DOCTYPE html>
<html>
<head>
<title>The jQuery Example</title>
<script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js">
</script>
<style>
#geek {
padding: 65 px 0;
}
</style>
<script>
(document).ready(function() {
// Disables ctrl+v, ctrl+x, ctrl+c.
('textarea').on("cut", function(e) {
("#d2").text('cut. not allowed!');
e.preventDefault();
});
('textarea').on("copy", function(e) {
("#d2").text('copy. not allowed!');
e.preventDefault();
});
('textarea').on("paste", function(e) {
("#d2").text('paste. not allowed!');
e.preventDefault();
});
// Above all three can be combined into one, above is
// executed separately for understanding purposes.
/*('textarea').on("cut copy paste", function(e) {
("#d2").text('right-click is disabled!');
e.preventDefault();
}); */
// Disables right-click.
('textarea').mousedown(function(e) {
if (e.button == 2) {
e.preventDefault();
alert('right-click is disabled!');
}
});
});
</script>
</head>
<body>
<center>
<div id='geek'>
<h1 style="color:green">GeeksforGeeks</h1>
<p id="d1">
The below textarea won't allow any cut, copy,
paste and right-click operations.
</p>
<textarea></textarea>
<p id="d2" style="color:red"></p>
</div>
</center>
</body>
</html>
- 输出:
通过使用keydown()和mousedown()方法：通过使用key-down事件，对于禁用右键，我们使用mouse-down()方法。在这两个方法的帮助下，我们将能够禁用剪切、复制、粘贴和右键点击选项。
- 语法:
$(“selector”).keydown(function)
$(“selector”).mousedown(function)
- 示例:
<!DOCTYPE html>
<html>
<head>
<script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js">
</script>
<style>
#geek {
padding: 65px 0;
}
</style>
<script>
(document).ready(function() {
(document).keydown(function(event) {
// 86 is the keycode of v
if (event.ctrlKey == true && (event.which == '86')) {
("#d2").text('paste. not allowed!');
event.preventDefault();
}
// 88 is the keycode of x
if (event.ctrlKey == true && (event.which == '88')) {
("#d2").text('cut. not allowed!');
event.preventDefault();
}
// 67 is the keycode of c
if (event.ctrlKey == true && (event.which == '67')) {
("#d2").text('copy. not allowed!');
event.preventDefault();
}
// Above all three can be combined into one, above is
// executed separately for understanding purposes.
/* if (event.ctrlKey==true && (event.which == '86'
|| event.which == '67' || event.which == '88')) {
alert('cut. copy. paste. not allowed!');
event.preventDefault();
} */
});
('textarea').mousedown(function(e) {
if (e.button == 2) {
alert('right-click is disabled!');
e.preventDefault();
}
});
});
</script>
</head>
<body>
<center>
<div id='geek'>
<h1 style="color:green">GeeksforGeeks</h1>
<p id="d1">
The below textarea won't allow any cut, copy,
paste and right-click operations.
</p>
<textarea></textarea>
<p id="d2" style="color:red"></p>
</div>
</center>
</body>
</html>
- 输出:
