JavaScript / jQuery->如何在“总值”中添加千位分隔符？

Question

如何在“总值”中添加千位分隔符？这样看起来就好像1 000或23000->之间有成千上万的空白，不是昏迷而是空白... 同样，当我输入INPUT 5位数字时，总值消失了...

这里是Fiddle

HTML：

<input type="text" id="nazwa"  min="0" max="500000"  >
<br><br>
Total value: <span id="total_expenses1"></span>

JavaScript / jQuery：

$('#nazwa').keyup(function(){ // run anytime the value changes
    var raz = document.getElementById('nazwa');
    var dwa = document.getElementById('total_expenses1');
    var firstValue  = Number($('#nazwa').val());   // get value of field
    var secondValue = 1.15; // convert it to a float
    raz.value = THOUSAND_SEPARATOR(this.value);
    var mega = $('#total_expenses1').html(Math.ceil(firstValue * secondValue));  
    THOUSAND_SEPARATOR(mega.value);
    // add them and output it
});

目前，千位分隔符功能仅适用于输入值

Answer 1

document.getElementById('total_expenses1').innerHTML = THOUSAND_SEPARATOR(String(Math.ceil(Number((this.value || '').replace(/\s/g, '')) * secondValue)));