我有这段代码可以检测用户是否根据this answer进行输入。我想通过ajax将响应发送到服务器,将我的ajax代码放在if / else语句的某处,但我不确定如何。
var textarea = $('#textarea');
var typingStatus = $('#typing_on');
var lastTypedTime = new Date(0); // it's 01/01/1970, actually some time in the past
var typingDelayMillis = 5000; // how long user can "think about his spelling" before we show "No one is typing -blank space." message
function refreshTypingStatus() {
if (!textarea.is(':focus') ||
textarea.val() == '' ||
new Date().getTime() - lastTypedTime.getTime() > typingDelayMillis) {
typingStatus.html('No one is typing -blank space.');
} else {
typingStatus.html('User is typing...');
}
}
function updateLastTypedTime() {
lastTypedTime = new Date();
}
setInterval(refreshTypingStatus, 100);
textarea.keypress(updateLastTypedTime);
textarea.blur(refreshTypingStatus);
到目前为止我尝试过:
var textarea = $('#chatbox');
var typingStatus = $('#typing_on');
var lastTypedTime = new Date(0); // it's 01/01/1970, actually some time in the past
var typingDelayMillis = 5000; // how long user can "think about his spelling" before we show "No one is typing -blank space." message
function refreshTypingStatus() {
if (!textarea.is(':focus') ||
textarea.val() == '' ||
new Date().getTime() - lastTypedTime.getTime() > typingDelayMillis) {
typingStatus.html('No one is typing -blank space.');
} else {
typingStatus.html('User is typing...');
$.ajax({
type: "POST",
url: "usertypes.php?v=<?php echo $usarr; ?>",
});
}
}
function updateLastTypedTime() {
lastTypedTime = new Date();
}
setInterval(refreshTypingStatus, 100);
textarea.keypress(updateLastTypedTime);
textarea.blur(refreshTypingStatus);
然而,我的似乎没有发送任何反应。所以我不确定ajax代码的位置是否正确。谁能解释我哪里出错?
答案 0 :(得分:1)
请再次检查:
$(document).ready(function() {
console.log("ready!");
var typing = false;
var timeout = undefined;
var typingDelayMillis = 1000;
function timeoutFunction() {
typing = false;
$.ajax({
type: "POST",
url: "usertypes.php?v=<?php echo $usarr; ?>&isTyping="+typing,
});
$('#typing_on').html("");
}
var delay = (function() {
var timer = 0;
return function(callback, ms) {
clearTimeout(timer);
timer = setTimeout(callback, ms);
};
})();
$('#chatbox').keypress(function(e) {
if (typing === false && $("#chatbox").is(":focus")) {
delay(function() {
timeoutFunction();
}, typingDelayMillis);
typing = true;
$.ajax({
type: "POST",
url: "usertypes.php?v=<?php echo $usarr; ?>&isTyping="+typing,
});
$('#typing_on').html("user types...");
}
});
$('#chatbox').on("blur", function() {
clearTimeout(timeout);
timeout = setTimeout(timeoutFunction, typingDelayMillis);
})
});
答案 1 :(得分:1)
将你的ajax代码放在keypress事件上。
在您的情况下,您应该在 updateLastTypedTime 函数中使用您的ajax代码,而不是将其写入 setInterval 的回调中,该回调在1秒内执行10次。
<script>
var textarea = $('#chatbox');
var typingStatus = $('#typing_on');
var lastTypedTime = new Date(0); // it's 01/01/1970, actually some time in the past
var typingDelayMillis = 5000; // how long user can "think about his spelling" before we show "No one is typing -blank space." message
function refreshTypingStatus() {
if (!textarea.is(':focus') ||
textarea.val() == '' ||
new Date().getTime() - lastTypedTime.getTime() > typingDelayMillis) {
typingStatus.html('No one is typing -blank space.');
} else {
typingStatus.html('User is typing...');
}
}
function updateLastTypedTime() {
lastTypedTime = new Date();
$.ajax({
type: "POST",
data: {var: 'value'},
url: "usertypes.php",
dataType: 'json',
success: function(response) {
console.log(response);
},
error: function(jqXHR, textStatus, errorThrown) {
// if error , code here..
}
});
}
setInterval(refreshTypingStatus, 100);
textarea.keypress(updateLastTypedTime);
textarea.blur(refreshTypingStatus);
</script>