bootstrap 4文件输入不显示文件名 [英] bootstrap 4 file input doesn't show the file name
本文介绍了bootstrap 4文件输入不显示文件名的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我对Bootstrap 4中的custom-file-input类有问题。选择要上传文件名的文件后，
不显示。
I have a problem with the custom-file-input class in Bootstrap 4. after I chose which file I want to upload the filename do not show.
我使用以下代码：
<div class="input-group mb-3">
<div class="custom-file">
<input type="file" class="custom-file-input" id="inputGroupFile02">
<label class="custom-file-label" for="inputGroupFile02">Choose file</label>
</div>
<div class="input-group-append">
<button class="btn btn-primary">Upload</button>
</div>
</div>
有什么想法可以解决而又不会太复杂吗？
Any idea how I can fix it without getting too complicated?
推荐答案
您需要使用javascript来显示所选文件的名称，如文档中所述： https://v4-alpha.getbootstrap.com/components/forms/#file-browser
You need to use javascript to show the name of the choosed file, as written in the documentation: https://v4-alpha.getbootstrap.com/components/forms/#file-browser
在这里您可以找到解决方案： Bootstrap 4文件输入
Here you can find the solution: Bootstrap 4 File Input
这是您的示例代码：
<html lang="en">
<head>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.1.1.slim.min.js" integrity="sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>
</head>
<body>
<div class="input-group mb-3">
<div class="custom-file">
<input type="file" class="custom-file-input" id="inputGroupFile02"/>
<label class="custom-file-label" for="inputGroupFile02">Choose file</label>
</div>
<div class="input-group-append">
<button class="btn btn-primary">Upload</button>
</div>
</div>
<script>
$('#inputGroupFile02').on('change',function(){
//get the file name
var fileName = $(this).val();
//replace the "Choose a file" label
$(this).next('.custom-file-label').html(fileName);
})
</script>
</body>
</html>
这篇关于bootstrap 4文件输入不显示文件名的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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