我是一个非常新的程序员,他制作了一个应用程序,它每 3 秒向 php 页面发送一次心跳并返回一个值,该值决定了要显示的表单元素。我对结果相当满意,但我想让我的 jquery 尽可能快和高效(目前有点慢)。我很确定 SO 已经有一些关于加快心跳的有用答案,但我搜索并找不到任何答案。
所以这是我的代码(只是 jquery,但如果需要,我可以发布 php 和 html,以及任何需要帮助的人):
<script type="text/javascript">
$(document).ready(function() {
setInterval(function(){
$('.jcontainer').each(function() {
var $e = $(this);
var dataid = $e.data("param").split('_')[1] ;
$.ajax({
url: 'heartbeat.php',
method: 'POST',
contentType: "application/json",
cache: true,
data: { "dataid": dataid },
success: function(data){
var msg = $.parseJSON(data);
if (msg == ""){ //after reset or after new patient that is untouched is added, show checkin
$e.find('.checkIn').show();
$e.find('.locationSelect').hide();
$e.find('.finished').hide();
$e.find('.reset').hide();
}
if ((msg < 999) && (msg > 0)){ // after hitting "Check In", Checkin button is hidden, and locationSelect is shown
$e.find('.checkIn').hide();
$e.find('.locationSelect').show();
$e.find('.finished').hide();
$e.find('.reset').hide();
$e.find('.locationSelect').val(msg);
}
if (msg == 1000){ //after hitting "Checkout", Option to reset is shown and "Finished!"
$e.find('.checkIn').hide();
$e.find('.locationSelect').hide();
$e.find('.finished').show();
$e.find('.reset').show();
}
}
});
});
},3000);
$('.checkIn').click(function() {
var $e = $(this);
var data = $e.data("param").split('_')[1] ;
// gets the id of button (1 for the first button)
// You can map this to the corresponding button in database...
$.ajax({
type: "POST",
url: "checkin.php",
// Data used to set the values in Database
data: { "checkIn" : $(this).val(), "buttonId" : data},
success: function() {
// Hide the current Button clicked
$e.hide();
var $container = $e.closest("div.jcontainer");
// Get the immediate form for the button
// find the select inside it and show...
$container.find('.locationSelect').show();
$container.find('.locationSelect').val(1);
}
});
});
$('.reset').click(function() {
var $e = $(this);
var data = $e.data("param").split('_')[1] ;
// gets the id of button (1 for the first button)
// You can map this to the corresponding button in database...
$.ajax({
type: "POST",
url: "reset.php",
// Data used to set the values in Database
data: { "reset" : $(this).val(), "buttonId" : data},
success: function() {
// Hide the current Button clicked
$e.hide();
var $container = $e.closest("div.jcontainer");
// Get the immediate form for the button
// find the select inside it and show...
$container.find('.checkIn').show();
}
});
});
$('.locationSelect').change(function(e) {
if($(this).children(":selected").val() === "CheckOut") {
$e = $(this);
var data = $e.data("param").split('_')[1] ;
$.ajax({
type: "POST",
url: "checkout.php",
// Data used to set the values in Database
data: { "checkOut" : $(this).val(), "buttonId" : data},
success: function() {
// Hide the current Button clicked
$e.hide();
var $container = $e.closest("div.jcontainer");
// Get the immediate form for the button
// find the select inside it and show...
$container.find('.finished').show();
$container.find('reset').show();
}
});
}
else{
$e = $(this);
var data = $e.data("param").split('_')[1] ;
// gets the id of select (1 for the first select)
// You can map this to the corresponding select in database...
$.ajax({
type: "POST",
url: "changeloc.php",
data: { "locationSelect" : $(this).val(), "selectid" : data},
success: function() {
// Do something here
}
});
}
});
});
</script>
感谢所有和任何帮助!请询问您是否需要更多详细信息!谢谢!