HTML / CSS仍然相对较新,目前正在使用Node.js和MongoDB为我的网站开发实时聊天功能.我已经能够让聊天工作,但一直坚持找出如何自定义聊天的特定方面.我想在聊天框(看到所有消息的区域)中更改用户名的字体粗细,以使用户名与框中其他文本相比更加突出.我很困惑如何在CSS中这样做.我已经突出显示(黄色)调用’Username’的行,所以我想这是我需要自定义的’类’,但如果有意义的话,它会与文本联系起来……?
谢谢你的帮助!
What my code and chat currently look like (see line 59 for highlighted portion)
<!DOCTYPE html>
<html>
<head>
<title>Chat</title>
<link rel="stylesheet" href="main.css">
</head>
<body>
<div class="chat">
<input type="text" class="chat-name" placeholder="Chat">
<div class="info-rect">Info</div>
<div class="chat-messages"></div>
<textarea placeholder="Join the conversation..."></textarea>
<div class="chat-status">Status: <span>Idle</span></div>
</div>
<script src="http://127.0.0.1:8080/socket.io/socket.io.js"></script>
<script>
(function() {
var getNode = function(s) {
return document.querySelector(s);
},
// Get required nodes
status = getNode('.chat-status span'),
messages = getNode('.chat-messages'),
textarea = getNode('.chat textarea'),
chatName = getNode('.chat-name'),
statusDefault = status.textContent,
setStatus = function(s){
status.textContent = s;
if(s !== statusDefault){
var delay = setTimeout(function(){
setStatus(statusDefault);
clearInterval(delay);
}, 3000);
}
};
//try connection
try{
var socket = io.connect('http://127.0.0.1:8080');
} catch(e){
//Set status to warn user
}
if(socket !== undefined){
//Listen for output
socket.on('output', function(data){
if(data.length){
//Loop through results
for(var x = 0; x < data.length; x = x + 1){
var message = document.createElement('div');
message.setAttribute('class', 'chat-message');
message.textContent = data[x].name + ': ' + data[x].message;
//Append
messages.appendChild(message);
messages.insertBefore(message, messages.firstChild);
}
}
});
//Listen for a status
socket.on('status', function(data){
setStatus((typeof data === 'object') ? data.message : data);
if(data.clear === true){
textarea.value = '';
}
});
//Listen for keydown
textarea.addEventListener('keydown', function(event){
var self = this,
name = chatName.value;
if(event.which === 13 && event.shiftKey === false){
socket.emit('input', {
name: name,
message: self.value
});
}
});
}
})();
</script>
</body>
</html>
最佳答案 要为名称添加css选择器:
var message = document.createElement('div');
message.setAttribute('class', 'chat-message');
message.textContent = ': ' + data[x].message;
var name=document.createElement('span');
name.setAttribute('class', 'userName');
name.textContent = data[x].name;
message.insertBefore(name, message.firstChild);
然后为css:
.userName{
font-weight: 700;
}
这是一个小提琴,你可以看到结果:https://jsfiddle.net/p4yfxLd0/