我收到了一个AJAX聊天,这是发送消息的代码:
$('#usermsg').keydown(function(e) {
var key = e.which;
if(key == 13) // the enter key code
{
var clientmsg = $("#usermsg").html();
if((jQuery.trim(clientmsg)).length==0)
{
return false;
}
$.ajax({
// .............
});
}
});
我想在$('#usermsg')
最简单,最好的方法是什么?
答案 0 :(得分:4)
var enterCounter = 0;
$('#usermsg').keydown(function(e) {
var key = e.which;
if(key == 13) { // the enter key code
if (++enterCounter > 3) alert('pressed enter more than 3 times in 2 seconds');
setTimeout(function(){enterCounter--;}, 2000);
var clientmsg = $("#usermsg").html();
if((jQuery.trim(clientmsg)).length==0) {
return false;
}
$.ajax({
// .............
});
}
});
答案 1 :(得分:0)
var countTime=0;
$('#usermsg').on('keydown', function(e){
var key = e.which;
if(key == 13) { // the enter key code
if (countTime==0){
countTime++;
setTimeout(function(){countTime=0},2000)
var clientmsg = $("#usermsg").html();
if((jQuery.trim(clientmsg)).length==0) {
return false;
}
$.ajax({
// .............
});
} else {
countTime++;
if (countTime>=3) countTime=0;
}
}
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="text" id="usermsg"/>
&#13;