Question

我有四个用户插入值的文本字段。对于前两个输入字段，它会计算将两个字段一起添加。我们的想法是获得每个字段的百分比值。因此，一旦有值，我们除以总数，再乘以100得到每个文本字段的百分比值。

一切正常！

但是，如果用户手动进入并添加了一天百分比，则应该通过获取该值并减去100来自动计算夜间百分比（或相反）。

每次更改值时，它都会恢复为旧版本。

＆＃13;

var day_value, night_value, day_percentage, night_percentage;

$('#day_kwh').on('input', function() {
  day_value = this.value;
});

$('#night_kwh').on('input', function() {
  night_value = this.value;
});

$('.storage').on('change', function() {
  //console.log(day_value + night_value);
  if (typeof day_value != 'undefined' && typeof night_value != 'undefined') {
    total = parseInt(day_value) + parseInt(night_value);
    console.log('total value: ' + total);
    day_value = (day_value / total) * 100;
    console.log('day value: ' + day_value);
    night_value = (day_value / total) * 100;
    console.log('night value: ' + night_value);

    $('#day_percent').val(day_value);
    $('#night_percent').val(night_value);

  }
});

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div class="storage">
  Day kWH:
  <input type="text" name="day_kwh" id="day_kwh">
  <br>Night kWH:
  <input type="text" name="night_kwh" id="night_kwh">
  <br>Day %:
  <input type="text" name="day_percent" id="day_percent">
  <br>Night %:
  <input type="text" name="night_percent" id="night_percent">
  <br>

  <input type="submit" value="Submit">
</div>

＆＃13;

Answer 1

您需要添加额外的代码来检查更改的控件是否为day_percent

before <- subset(df1, NUM==records$ID & Date==records$Date & Time<records$Start)
Warning messages:
1: In NUM == records$ID :
  longer object length is not a multiple of shorter object length
2: In Date == records$Date :
  longer object length is not a multiple of shorter object length
3: In Time < records$Start :
  longer object length is not a multiple of shorter object length

值更改后文本值保持不变

1 个答案: