由于引导,javascript GET和POST方法不起作用
我一直在尝试使用express和sockets制作一个简单的聊天应用程序,但是 由于某种原因,我的GET和PUT请求无法通过。调试了一段时间后,我发现简单地更改bootsrap cdn就可以了,但我不明白为什么 这与引导网站中给出的cdn有关,一旦单击submit按钮,什么都不会发生由于引导,javascript GET和POST方法不起作用,javascript,html,css,twitter-bootstrap,Javascript,Html,Css,Twitter Bootstrap,我一直在尝试使用express和sockets制作一个简单的聊天应用程序,但是 由于某种原因,我的GET和PUT请求无法通过。调试了一段时间后,我发现简单地更改bootsrap cdn就可以了,但我不明白为什么 这与引导网站中给出的cdn有关,一旦单击submit按钮,什么都不会发生 <!doctype html> <html lang="en"> <head> <link rel="stylesheet" href="https://sta
<!doctype html>
<html lang="en">
<head>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
<title>live chat</title>
</head>
<body>
<div class="container">
<br>
<div class="jumbotron">
<h1 class="display-4">Send Message</h1>
<br>
<input id = "name" class="form-control" placeholder="Name">
<br>
<textarea id = "message" class="form-control" placeholder="Your Message Here">
</textarea>
<br>
<button id="send" class="btn btn-success">Send</button>
</div>
<div id="messages">
</div>
</div>
<script>
$(() => {
$("#send").click(()=>{
sendMessage({
name: $("#name").val(),
message:$("#message").val()});
})
getMessages()
})
function addMessages(message){
$("#messages").append(`
<h4> ${message.name} </h4>
<p> ${message.message} </p>`)
}
function getMessages(){
$.get('http://localhost:3000/messages', (data) => {
data.forEach(addMessages);
})
}
function sendMessage(message){
$.post('http://localhost:3000/messages', message)
}
</script>
</body>
</html>
上述代码get/put请求不起作用
但是如果我添加以下cdn
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" integrity="sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.2.1.min.js" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js" integrity="sha384-b/U6ypiBEHpOf/4+1nzFpr53nxSS+GLCkfwBdFNTxtclqqenISfwAzpKaMNFNmj4" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js" integrity="sha384-h0AbiXch4ZDo7tp9hKZ4TsHbi047NrKGLO3SEJAg45jXxnGIfYzk4Si90RDIqNm1" crossorigin="anonymous"></script>
一切似乎都很顺利。问题出在哪里?jQuery Slim删除了几个功能。代码在第二个示例中工作的原因是您使用的是完整版本的jQuery