Question

＆＃13;

<!DOCTYPE html>
<html lang="en">
<head>
	<title>Bootstrap Example</title>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.js"></script>
	<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.js"></script>
</head>
<body>

	<div class="container">
		<h3>Tooltip Example</h3>
		<a  data-toggle="tooltip" title="Hooray!">Hover over me</a>
	</div>

	<script>
	$(document).ready(function(){
		$('[data-toggle="tooltip"]').tooltip();  
                $('[data-toggle="tooltip"]').off("mouseenter mouseleave");
		$('[data-toggle="tooltip"]').tooltip();

	});
	</script>

</body>
</html>

＆＃13;

为什么即使我初始化两次也无法得到工具提示？

Answer 1

DavidG对日志记录的评论。基本上，如果您希望能够再次调用tooltip并让它附加监听器，则需要完全销毁tooltip。通过调用off，您只是删除了侦听器，但没有销毁tooltip。因此，当您第二次调用tooltip时，它不会再次初始化tooltip。由于以下行：

if (!data) $this.data('bs.tooltip', (data = new Tooltip(this, options)))

https://github.com/twbs/bootstrap/blob/v3-dev/js/tooltip.js#L501

<!DOCTYPE html>
<html lang="en">
<head>
	<title>Bootstrap Example</title>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.js"></script>
	<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.js"></script>
</head>
<body>

	<div class="container">
		<h3>Tooltip Example</h3>
		<a data-toggle="tooltip" data-placement="top" title="Hooray!">Hover over me</a>
	</div>

	<script>
	$(document).ready(function(){
            console.log("init");
            $('[data-toggle="tooltip"]').tooltip();
            setTimeout(function() {
                console.log("destroy");
                $('[data-toggle="tooltip"]').tooltip("destroy");
                setTimeout(function() {
                    console.log("reinit");
                    $('[data-toggle="tooltip"]').tooltip();
                }, 5000);
            }, 5000);
	});
	</script>

</body>
</html>

Answer 2

我删除了重复声明并添加了工具提示位置，现在可以正常工作

<!DOCTYPE html>
<html lang="en">
<head>
	<title>Bootstrap Example</title>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.js"></script>
	<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.js"></script>
</head>
<body>

	<div class="container">
		<h3>Tooltip Example</h3>
		<a data-toggle="tooltip" data-placement="top" title="Hooray!">Hover over me</a>
	</div>

	<script>
	$(document).ready(function(){
		$('[data-toggle="tooltip"]').tooltip(); 
	});
	</script>

</body>
</html>

Answer 3

试试这个：

＆＃13;

<!DOCTYPE html>
<html lang="en">
<head>
	<title>Bootstrap Example</title>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.js"></script>
	<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.js"></script>
</head>
<body>

	<div class="container">
		<h3>Tooltip Example</h3>
		<a id="anchor" data-toggle="tooltip" title="Hooray!">Hover over me</a>
	</div>

	<script>
    var handler = function (e) {
    	$('[data-toggle="tooltip"]').tooltip();  
    }
	$(document).ready(function(){
    $('[data-toggle="tooltip"]').off("mouseenter mouseleave",handler);
    $('[data-toggle="tooltip"]').on("mouseenter mouseleave",handler);
	});
	</script>

</body>
</html>

＆＃13;

它有效，但我相信如果你详细说明你想做什么，可能会有更好的解决方案。

为什么bootstrap工具提示没有初始化两次？

3 个答案: