在 jQuery 中触发 keyup() 之前添加延迟
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时间：2020-08-27 00:03:15 来源:igfitidea点击:
Adding a delay before keyup() fires in jQuery
提问by Seany84
I have read through some of the suggested questions but I am not sure exactly how to implement them:
我已经阅读了一些建议的问题，但我不确定如何实施它们：
- (jquery/js) - get text from field on keyup, but with delay for further typing
- How to delay the .keyup() handler until the user stops typing?
- How to trigger an onkeyup event that's delayed until a user pauses their typing?
I have 8 textboxes, 7 are used for numeric input and the 8th is a total. i.e. 7.5 + 7.5 + 7.5 + 7.5 + 7.5 + 0.0 + 0.0 = 37.5
我有 8 个文本框，7 个用于数字输入，第 8 个是总数。即 7.5 + 7.5 + 7.5 + 7.5 + 7.5 + 0.0 + 0.0 = 37.5
I have the jQuery working so that it monitors each textboxes keyup() and adds all of the values and calculates the total.
我让 jQuery 工作，以便它监视每个文本框 keyup() 并添加所有值并计算总数。
I decided that I want to format the users input in the 7 textboxes so that it comes out like #.# if they enter "1" or ".1" i.e. "1.0" or "0.1".
我决定要格式化用户在 7 个文本框中输入的内容，以便在他们输入“1”或“.1”（即“1.0”或“0.1”）时显示为 #.#。
The problem is that I need to add a delay before the input is formatted and I am unsure as to how I do it with javascript and/or jquery.
问题是我需要在格式化输入之前添加一个延迟，我不确定我如何使用 javascript 和/或 jquery 来做到这一点。
<script type="text/javascript">
$(function () {
var content = $('input[id*="txtMondayHours"]').val();
$('input[id*="txtMondayHours"]').keyup(function () {
if ($('input[id*="txtMondayHours"]').val() != content) {
content = $('input[id*="txtMondayHours"]').val();
$('input[id*="txtMondayHours"]').val((new Number($('input[id*="txtMondayHours"]').val())).toFixed(2));
var hoursMon = new Number(content);
var hoursTue = new Number($('input[id*="txtTuesdayHours"]').val());
var hoursWed = new Number($('input[id*="txtWednesdayHours"]').val());
var hoursThu = new Number($('input[id*="txtThursdayHours"]').val());
var hoursFri = new Number($('input[id*="txtFridayHours"]').val());
var hoursSat = new Number($('input[id*="txtSaturdayHours"]').val());
var hoursSun = new Number($('input[id*="txtSundayHours"]').val());
$('input[id*="txtTotalWorkingHours"]').val(parseFloat(hoursMon.toFixed(2)) + parseFloat(hoursTue.toFixed(2)) + parseFloat(hoursWed.toFixed(2)) + parseFloat(hoursThu.toFixed(2)) + parseFloat(hoursFri.toFixed(2)) + parseFloat(hoursSat.toFixed(2)) + parseFloat(hoursSun.toFixed(2)));
}
});
var content2 = $('input[id*="txtTuesdayHours"]').val();
$('input[id*="txtTuesdayHours"]').keyup(function () {
if ($('input[id*="txtTuesdayHours"]').val() != content2) {
content2 = $('input[id*="txtTuesdayHours"]').val();
var hoursMon = new Number(content2);
var hoursTue = new Number($('input[id*="txtMondayHours"]').val());
var hoursWed = new Number($('input[id*="txtWednesdayHours"]').val());
var hoursThu = new Number($('input[id*="txtThursdayHours"]').val());
var hoursFri = new Number($('input[id*="txtFridayHours"]').val());
var hoursSat = new Number($('input[id*="txtSaturdayHours"]').val());
var hoursSun = new Number($('input[id*="txtSundayHours"]').val());
$('input[id*="txtTotalWorkingHours"]').val(parseFloat(hoursMon.toFixed(2)) + parseFloat(hoursTue.toFixed(2)) + parseFloat(hoursWed.toFixed(2)) + parseFloat(hoursThu.toFixed(2)) + parseFloat(hoursFri.toFixed(2)) + parseFloat(hoursSat.toFixed(2)) + parseFloat(hoursSun.toFixed(2)));
}
});
var content3 = $('input[id*="txtWednesdayHours"]').val();
$('input[id*="txtWednesdayHours"]').keyup(function () {
if ($('input[id*="txtWednesdayHours"]').val() != content3) {
content3 = $('input[id*="txtWednesdayHours"]').val();
var hoursMon = new Number(content3);
var hoursTue = new Number($('input[id*="txtMondayHours"]').val());
var hoursWed = new Number($('input[id*="txtTuesdayHours"]').val());
var hoursThu = new Number($('input[id*="txtThursdayHours"]').val());
var hoursFri = new Number($('input[id*="txtFridayHours"]').val());
var hoursSat = new Number($('input[id*="txtSaturdayHours"]').val());
var hoursSun = new Number($('input[id*="txtSundayHours"]').val());
$('input[id*="txtTotalWorkingHours"]').val(parseFloat(hoursMon.toFixed(2)) + parseFloat(hoursTue.toFixed(2)) + parseFloat(hoursWed.toFixed(2)) + parseFloat(hoursThu.toFixed(2)) + parseFloat(hoursFri.toFixed(2)) + parseFloat(hoursSat.toFixed(2)) + parseFloat(hoursSun.toFixed(2)));
}
});
var content4 = $('input[id*="txtThursdayHours"]').val();
$('input[id*="txtThursdayHours"]').keyup(function () {
if ($('input[id*="txtThursdayHours"]').val() != content4) {
content4 = $('input[id*="txtThursdayHours"]').val();
var hoursMon = new Number(content4);
var hoursTue = new Number($('input[id*="txtMondayHours"]').val());
var hoursWed = new Number($('input[id*="txtTuesdayHours"]').val());
var hoursThu = new Number($('input[id*="txtWednesdayHours"]').val());
var hoursFri = new Number($('input[id*="txtFridayHours"]').val());
var hoursSat = new Number($('input[id*="txtSaturdayHours"]').val());
var hoursSun = new Number($('input[id*="txtSundayHours"]').val());
$('input[id*="txtTotalWorkingHours"]').val(parseFloat(hoursMon.toFixed(2)) + parseFloat(hoursTue.toFixed(2)) + parseFloat(hoursWed.toFixed(2)) + parseFloat(hoursThu.toFixed(2)) + parseFloat(hoursFri.toFixed(2)) + parseFloat(hoursSat.toFixed(2)) + parseFloat(hoursSun.toFixed(2)));
}
});
var content5 = $('input[id*="txtFridayHours"]').val();
$('input[id*="txtFridayHours"]').keyup(function () {
if ($('input[id*="txtFridayHours"]').val() != content5) {
content5 = $('input[id*="txtFridayHours"]').val();
var hoursMon = new Number(content5);
var hoursTue = new Number($('input[id*="txtMondayHours"]').val());
var hoursWed = new Number($('input[id*="txtWednesdayHours"]').val());
var hoursThu = new Number($('input[id*="txtThursdayHours"]').val());
var hoursFri = new Number($('input[id*="txtTuesdayHours"]').val());
var hoursSat = new Number($('input[id*="txtSaturdayHours"]').val());
var hoursSun = new Number($('input[id*="txtSundayHours"]').val());
$('input[id*="txtTotalWorkingHours"]').val(parseFloat(hoursMon.toFixed(2)) + parseFloat(hoursTue.toFixed(2)) + parseFloat(hoursWed.toFixed(2)) + parseFloat(hoursThu.toFixed(2)) + parseFloat(hoursFri.toFixed(2)) + parseFloat(hoursSat.toFixed(2)) + parseFloat(hoursSun.toFixed(2)));
}
});
var content6 = $('input[id*="txtSaturdayHours"]').val();
$('input[id*="txtSaturdayHours"]').keyup(function () {
if ($('input[id*="txtSaturdayHours"]').val() != content6) {
content6 = $('input[id*="txtSaturdayHours"]').val();
var hoursMon = new Number(content6);
var hoursTue = new Number($('input[id*="txtMondayHours"]').val());
var hoursWed = new Number($('input[id*="txtWednesdayHours"]').val());
var hoursThu = new Number($('input[id*="txtThursdayHours"]').val());
var hoursFri = new Number($('input[id*="txtFridayHours"]').val());
var hoursSat = new Number($('input[id*="txtTuesdayHours"]').val());
var hoursSun = new Number($('input[id*="txtSundayHours"]').val());
$('input[id*="txtTotalWorkingHours"]').val(parseFloat(hoursMon.toFixed(2)) + parseFloat(hoursTue.toFixed(2)) + parseFloat(hoursWed.toFixed(2)) + parseFloat(hoursThu.toFixed(2)) + parseFloat(hoursFri.toFixed(2)) + parseFloat(hoursSat.toFixed(2)) + parseFloat(hoursSun.toFixed(2)));
}
});
var content7 = $('input[id*="txtSundayHours"]').val();
$('input[id*="txtSundayHours"]').keyup(function () {
if ($('input[id*="txtSundayHours"]').val() != content7) {
content7 = $('input[id*="txtSundayHours"]').val();
var hoursMon = new Number(content7);
var hoursTue = new Number($('input[id*="txtMondayHours"]').val());
var hoursWed = new Number($('input[id*="txtWednesdayHours"]').val());
var hoursThu = new Number($('input[id*="txtThursdayHours"]').val());
var hoursFri = new Number($('input[id*="txtFridayHours"]').val());
var hoursSat = new Number($('input[id*="txtSaturdayHours"]').val());
var hoursSun = new Number($('input[id*="txtTuesdayHours"]').val());
$('input[id*="txtTotalWorkingHours"]').val(parseFloat(hoursMon.toFixed(2)) + parseFloat(hoursTue.toFixed(2)) + parseFloat(hoursWed.toFixed(2)) + parseFloat(hoursThu.toFixed(2)) + parseFloat(hoursFri.toFixed(2)) + parseFloat(hoursSat.toFixed(2)) + parseFloat(hoursSun.toFixed(2)));
}
});
});
</script>
Ideally, I would like to fire this line:
理想情况下，我想触发这条线：
$('input[id*="txtMondayHours"]').val((new Number($('input[id*="txtMondayHours"]').val())).toFixed(2));
After a specified time e.g. 100ms
在指定时间后，例如 100 毫秒
Updated working code:
更新的工作代码：
<script type="text/javascript">
var delay = (function () {
var timer = 0;
return function (callback, ms) {
clearTimeout(timer);
timer = setTimeout(callback, ms);
};
})();
$(function () {
var content = $('input[id*="txtMondayHours"]').val();
$('input[id*="txtMondayHours"]').keyup(function () {
if ($('input[id*="txtMondayHours"]').val() != content) {
content = $('input[id*="txtMondayHours"]').val();
var hoursMon = new Number(content);
var hoursTue = new Number($('input[id*="txtTuesdayHours"]').val());
var hoursWed = new Number($('input[id*="txtWednesdayHours"]').val());
var hoursThu = new Number($('input[id*="txtThursdayHours"]').val());
var hoursFri = new Number($('input[id*="txtFridayHours"]').val());
var hoursSat = new Number($('input[id*="txtSaturdayHours"]').val());
var hoursSun = new Number($('input[id*="txtSundayHours"]').val());
$('input[id*="txtTotalWorkingHours"]').val(parseFloat(hoursMon.toFixed(2)) + parseFloat(hoursTue.toFixed(2)) + parseFloat(hoursWed.toFixed(2)) + parseFloat(hoursThu.toFixed(2)) + parseFloat(hoursFri.toFixed(2)) + parseFloat(hoursSat.toFixed(2)) + parseFloat(hoursSun.toFixed(2)));
delay(function () {
$('input[id*="txtMondayHours"]').val((new Number($('input[id*="txtMondayHours"]').val())).toFixed(2));
}, 750);
}
});
var content2 = $('input[id*="txtTuesdayHours"]').val();
$('input[id*="txtTuesdayHours"]').keyup(function () {
if ($('input[id*="txtTuesdayHours"]').val() != content2) {
content2 = $('input[id*="txtTuesdayHours"]').val();
var hoursMon = new Number(content2);
var hoursTue = new Number($('input[id*="txtMondayHours"]').val());
var hoursWed = new Number($('input[id*="txtWednesdayHours"]').val());
var hoursThu = new Number($('input[id*="txtThursdayHours"]').val());
var hoursFri = new Number($('input[id*="txtFridayHours"]').val());
var hoursSat = new Number($('input[id*="txtSaturdayHours"]').val());
var hoursSun = new Number($('input[id*="txtSundayHours"]').val());
$('input[id*="txtTotalWorkingHours"]').val(parseFloat(hoursMon.toFixed(2)) + parseFloat(hoursTue.toFixed(2)) + parseFloat(hoursWed.toFixed(2)) + parseFloat(hoursThu.toFixed(2)) + parseFloat(hoursFri.toFixed(2)) + parseFloat(hoursSat.toFixed(2)) + parseFloat(hoursSun.toFixed(2)));
delay(function () {
$('input[id*="txtTuesdayHours"]').val((new Number($('input[id*="txtTuesdayHours"]').val())).toFixed(2));
}, 750);
}
});
var content3 = $('input[id*="txtWednesdayHours"]').val();
$('input[id*="txtWednesdayHours"]').keyup(function () {
if ($('input[id*="txtWednesdayHours"]').val() != content3) {
content3 = $('input[id*="txtWednesdayHours"]').val();
var hoursMon = new Number(content3);
var hoursTue = new Number($('input[id*="txtMondayHours"]').val());
var hoursWed = new Number($('input[id*="txtTuesdayHours"]').val());
var hoursThu = new Number($('input[id*="txtThursdayHours"]').val());
var hoursFri = new Number($('input[id*="txtFridayHours"]').val());
var hoursSat = new Number($('input[id*="txtSaturdayHours"]').val());
var hoursSun = new Number($('input[id*="txtSundayHours"]').val());
$('input[id*="txtTotalWorkingHours"]').val(parseFloat(hoursMon.toFixed(2)) + parseFloat(hoursTue.toFixed(2)) + parseFloat(hoursWed.toFixed(2)) + parseFloat(hoursThu.toFixed(2)) + parseFloat(hoursFri.toFixed(2)) + parseFloat(hoursSat.toFixed(2)) + parseFloat(hoursSun.toFixed(2)));
delay(function () {
$('input[id*="txtWednesdayHours"]').val((new Number($('input[id*="txtWednesdayHours"]').val())).toFixed(2));
}, 750);
}
});
var content4 = $('input[id*="txtThursdayHours"]').val();
$('input[id*="txtThursdayHours"]').keyup(function () {
if ($('input[id*="txtThursdayHours"]').val() != content4) {
content4 = $('input[id*="txtThursdayHours"]').val();
var hoursMon = new Number(content4);
var hoursTue = new Number($('input[id*="txtMondayHours"]').val());
var hoursWed = new Number($('input[id*="txtTuesdayHours"]').val());
var hoursThu = new Number($('input[id*="txtWednesdayHours"]').val());
var hoursFri = new Number($('input[id*="txtFridayHours"]').val());
var hoursSat = new Number($('input[id*="txtSaturdayHours"]').val());
var hoursSun = new Number($('input[id*="txtSundayHours"]').val());
$('input[id*="txtTotalWorkingHours"]').val(parseFloat(hoursMon.toFixed(2)) + parseFloat(hoursTue.toFixed(2)) + parseFloat(hoursWed.toFixed(2)) + parseFloat(hoursThu.toFixed(2)) + parseFloat(hoursFri.toFixed(2)) + parseFloat(hoursSat.toFixed(2)) + parseFloat(hoursSun.toFixed(2)));
delay(function () {
$('input[id*="txtThursdayHours"]').val((new Number($('input[id*="txtThursdayHours"]').val())).toFixed(2));
}, 750);
}
});
var content5 = $('input[id*="txtFridayHours"]').val();
$('input[id*="txtFridayHours"]').keyup(function () {
if ($('input[id*="txtFridayHours"]').val() != content5) {
content5 = $('input[id*="txtFridayHours"]').val();
var hoursMon = new Number(content5);
var hoursTue = new Number($('input[id*="txtMondayHours"]').val());
var hoursWed = new Number($('input[id*="txtWednesdayHours"]').val());
var hoursThu = new Number($('input[id*="txtThursdayHours"]').val());
var hoursFri = new Number($('input[id*="txtTuesdayHours"]').val());
var hoursSat = new Number($('input[id*="txtSaturdayHours"]').val());
var hoursSun = new Number($('input[id*="txtSundayHours"]').val());
$('input[id*="txtTotalWorkingHours"]').val(parseFloat(hoursMon.toFixed(2)) + parseFloat(hoursTue.toFixed(2)) + parseFloat(hoursWed.toFixed(2)) + parseFloat(hoursThu.toFixed(2)) + parseFloat(hoursFri.toFixed(2)) + parseFloat(hoursSat.toFixed(2)) + parseFloat(hoursSun.toFixed(2)));
delay(function () {
$('input[id*="txtFridayHours"]').val((new Number($('input[id*="txtFridayHours"]').val())).toFixed(2));
}, 750);
}
});
var content6 = $('input[id*="txtSaturdayHours"]').val();
$('input[id*="txtSaturdayHours"]').keyup(function () {
if ($('input[id*="txtSaturdayHours"]').val() != content6) {
content6 = $('input[id*="txtSaturdayHours"]').val();
var hoursMon = new Number(content6);
var hoursTue = new Number($('input[id*="txtMondayHours"]').val());
var hoursWed = new Number($('input[id*="txtWednesdayHours"]').val());
var hoursThu = new Number($('input[id*="txtThursdayHours"]').val());
var hoursFri = new Number($('input[id*="txtFridayHours"]').val());
var hoursSat = new Number($('input[id*="txtTuesdayHours"]').val());
var hoursSun = new Number($('input[id*="txtSundayHours"]').val());
$('input[id*="txtTotalWorkingHours"]').val(parseFloat(hoursMon.toFixed(2)) + parseFloat(hoursTue.toFixed(2)) + parseFloat(hoursWed.toFixed(2)) + parseFloat(hoursThu.toFixed(2)) + parseFloat(hoursFri.toFixed(2)) + parseFloat(hoursSat.toFixed(2)) + parseFloat(hoursSun.toFixed(2)));
delay(function () {
$('input[id*="txtSaturdayHours"]').val((new Number($('input[id*="txtSaturdayHours"]').val())).toFixed(2));
}, 750);
}
});
var content7 = $('input[id*="txtSundayHours"]').val();
$('input[id*="txtSundayHours"]').keyup(function () {
if ($('input[id*="txtSundayHours"]').val() != content7) {
content7 = $('input[id*="txtSundayHours"]').val();
var hoursMon = new Number(content7);
var hoursTue = new Number($('input[id*="txtMondayHours"]').val());
var hoursWed = new Number($('input[id*="txtWednesdayHours"]').val());
var hoursThu = new Number($('input[id*="txtThursdayHours"]').val());
var hoursFri = new Number($('input[id*="txtFridayHours"]').val());
var hoursSat = new Number($('input[id*="txtSaturdayHours"]').val());
var hoursSun = new Number($('input[id*="txtTuesdayHours"]').val());
$('input[id*="txtTotalWorkingHours"]').val(parseFloat(hoursMon.toFixed(2)) + parseFloat(hoursTue.toFixed(2)) + parseFloat(hoursWed.toFixed(2)) + parseFloat(hoursThu.toFixed(2)) + parseFloat(hoursFri.toFixed(2)) + parseFloat(hoursSat.toFixed(2)) + parseFloat(hoursSun.toFixed(2)));
delay(function () {
$('input[id*="txtSundayHours"]').val((new Number($('input[id*="txtSundayHours"]').val())).toFixed(2));
}, 750);
}
});
});
</script>
采纳答案by Daniel A. White
Put your code in a timeout. Then on subsequent 1keyupevents, clear the timeout and reset it.
将您的代码置于超时状态。然后在随后的 1 个keyup事件中，清除超时并重置它。
That is what this one is doing How to delay the .keyup() handler until the user stops typing?
这就是这个人在做什么如何延迟 .keyup() 处理程序直到用户停止输入？
回答by Richard JP Le Guen
You could use the underscore.jslibrary's debounce function.
您可以使用underscore.js库的debounce 函数。
回答by ialphan
Use Ben Alman's jQuery throttle / debounce: http://benalman.com/projects/jquery-throttle-debounce-plugin/.
使用 Ben Alman 的 jQuery 节流/去抖动：http: //benalman.com/projects/jquery-throttle-debounce-plugin/。
