javascript - jquery中的逻辑条件

Question

我的jquery函数是这样的，我想检查当用户输入的净重大于毛重时，我想对其模糊发出警报。但这不起作用，我的体重都处于警戒状态，但我有这种情况

function checkWeight(aboj)
{
  var row     = $(aboj).parents('.itemRow');
  var gWeight = row.find('.gWeight').val() != '' ? row.find('.gWeight').val() : 0;
  var netWeight = row.find('.netWeight').val() != '' ? row.find('.netWeight').val() : 0;


  if(gWeight > netWeight)
  {
    alert("Please Check Gross Weight");
  }
}

我的html是这样的

<input type="text" class="input netWeight" name="netWeight[]"  onblur=" checkWeight(this);>

Answer 1

您正在比较字符串。您需要将字符串值解析为 float 或整数才能进行数字比较:

• parseInt
• parseFloat

$('body').on('click', '#compare', function () {
  var gross = parseFloat($('#gross').val());
  var net = parseFloat($('#net').val());
  
  if (gross>net) {
    alert('gross: ' + gross + ' is greater than net: ' + net);
  }
  if(net>gross) {
    alert('net: ' + net + ' is greater than gross: ' + gross);
  }
  })

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
Gross:<input type="text" id="gross"/>
<br/>
Net:<input type="text" id="net"/>
<br/>
<input type="button" id="compare" value="Compare"/>