function toUnitlessLineHeight(fontSizeInPx, lineHeightInPx) {
  var lineHeight = stripUnit(lineHeightInPx);
  var fontSize = stripUnit(fontSizeInPx);
  return lineHeight / fontSize;
}
/**
 * Given a font size in px and a line height in px, this function will compute
 * a unitless line height.
 *
 * @param fontSizeInPx - The font size in px found the line to compute
 * line-height against.
 * @param lineHeightInPx - The line height in px
 * @return The computed unitless line-height.
 */
Given a font size in px and a line height in px, this function will compute
a unitless line height.

@param fontSizeInPx - The font size in px found the line to compute
line-height against.
@param lineHeightInPx - The line height in px
@return The computed unitless line-height.
Given a font size in px and a line height in px this function will compute a unitless line height . @param fontSizeInPx - The font size in px found the line to compute line - height against . @param lineHeightInPx - The line height in px @return The computed unitless line - height .
function toUnitlessLineHeight(fontSizeInPx, lineHeightInPx) {
  var lineHeight = stripUnit(lineHeightInPx);
  var fontSize = stripUnit(fontSizeInPx);
  return lineHeight / fontSize;
}
function toUnitlessLineHeight ( fontSizeInPx , lineHeightInPx ) { var lineHeight = stripUnit ( lineHeightInPx ) ; var fontSize = stripUnit ( fontSizeInPx ) ; return lineHeight / fontSize ; }
Given a font size in px and a line height in px, this function will compute
 a unitless line height.
Given a font size in px and a line height in px this function will compute a unitless line height .