我正在尝试使用jQuery创建一个简单的计算器，现在已经用了几个小时的NaN结果。 不知道我漏了什么或者哪里犯了错。 基本上我只想把2个输入字段相乘。
帮个忙就好了！
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var b = jQuery('input[name="mpfc-not-f"]').val();
var c = jQuery('input[name="atv-f"]').val();
total_rev = 0;
total_rev = Math.round(b * c);
totals_rev = total_rev.toString().replace(/(d)(?=(d{3})+(?!d))/g, "$1,");
jQuery(".over-total").text(totals_rev);<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="text" value="0" name=" mpfc-not-f" class="mpfc-not"/>
<input type="text" value="0" name="atv-f" class="atv"/>
<p class="over-total">0</p>null
尝试使用:
jquery(document).ready(() => {
var b = jQuery('input[name="mpfc-not-f"]').val();
var c = jQuery('input[name="atv-f"]').val();
total_rev = 0;
total_rev = Math.round(b * c);
totals_rev = total_rev.toString().replace(/(d)(?=(d{3})+(?!d))/g, "$1,");
jQuery(".over-total").text(totals_rev);
});
试试这个
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function mul(){
var b = jQuery('input[name="mpfc-not-f"]').val();
var c = jQuery('input[name="atv-f"]').val();
total_rev = 0;
total_rev = Math.round(b * c);
totals_rev = total_rev.toString().replace(/(d)(?=(d{3})+(?!d))/g, "$1,");
jQuery(".over-total").text(totals_rev);
}<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="text" value="0" name="mpfc-not-f" class="mpfc-not"/>
<input type="text" value="0" name="atv-f" class="atv"/>
<p class="over-total">0</p>
<button onclick="mul()">Multiply</button>
Maby这对你有帮助
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function doMath(){
let multiply_result = $("#numberA").val() * $("#numberB").val();
console.log(multiply_result);
return multiply_result;
}
$(".number").change(function(){
let result = doMath();
jQuery(".over-total").text(result);
});<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="text" id="numberA" value="0" name=" mpfc-not-f" class="mpfc-not number"/>
<input type="text" id="numberB" value="0" name="atv-f" class="atv number"/>
<p class="over-total">0</p>
</div>