js functions

functions.js

const obj2get = function (obj) {
  let data = []

  for (let key in obj) {
    let value = obj[key]
    if (typeof value === 'object') {
      assignValue(data, value, key)
    } else {
      data.push(`${key}=${value}`)
    }
  }

  function assignValue (data, obj, key) {
    for (let k in obj) {
      let value = obj[k]
      if (typeof value === 'object') {
        assignValue(data, value, key + '[' + k + ']')
      } else {
        data.push(`${key}[${k}]=${value}`)
      }
    }
  }
  
  return data.join('&')
}

function number_format (number, decimals = 0, decPoint = '.', separator = ' ') {
  number = (number + '').replace(/[^0-9+\-Ee.]/g, '')
  let n = !isFinite(+number) ? 0 : +number
  let prec = !isFinite(+decimals) ? 0 : Math.abs(decimals)
  let sep = (typeof separator === 'undefined') ? ',' : separator
  let dec = (typeof decPoint === 'undefined') ? '.' : decPoint
  let s = ''
  let toFixedFix = function (n, prec) {
    let k = Math.pow(10, prec)
    return '' + (Math.round(n * k) / k)
      .toFixed(prec)
  }
  // Фиксим баг в IE parseFloat(0.55).toFixed(0) = 0;
  s = (prec ? toFixedFix(n, prec) : '' + Math.round(n))
    .split('.')
  if (s[0].length > 3) {
    s[0] = s[0].replace(/\B(?=(?:\d{3})+(?!\d))/g, sep)
  }
  if ((s[1] || '')
    .length < prec) {
    s[1] = s[1] || ''
    s[1] += new Array(prec - s[1].length + 1)
      .join('0')
  }
  return s.join(dec)
}