Function dangerousStyleValue

docs/lib/react.js:16322–16367

* Convert a value into the proper css writable value. The style name `name` * should be logical (no hyphens), as specified * in `CSSProperty.isUnitlessNumber`. * * @param {string} name CSS property name such as `topMargin`. * @param {*} value CSS property value such as `10px`. * @param {ReactD

(name, value, component)

 * @return {string} Normalized style value with dimensions applied.
 */
function dangerousStyleValue(name, value, component) {
  // Note that we've removed escapeTextForBrowser() calls here since the
  // whole string will be escaped when the attribute is injected into
  // the markup. If you provide unsafe user data here they can inject
  // arbitrary CSS which may be problematic (I couldn't repro this):
  // https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_Sheet
  // http://www.thespanner.co.uk/2007/11/26/ultimate-xss-css-injection/
  // This is not an XSS hole but instead a potential CSS injection issue
  // which has lead to a greater discussion about how we're going to
  // trust URLs moving forward. See #2115901

  var isEmpty = value == null || typeof value === 'boolean' || value === '';
  if (isEmpty) {
    return '';
  }

  var isNonNumeric = isNaN(value);
  if (isNonNumeric || value === 0 || isUnitlessNumber.hasOwnProperty(name) && isUnitlessNumber[name]) {
    return '' + value; // cast to string
  }

  if (typeof value === 'string') {
    if ("development" !== 'production') {
      if (component) {
        var owner = component._currentElement._owner;
        var ownerName = owner ? owner.getName() : null;
        if (ownerName && !styleWarnings[ownerName]) {
          styleWarnings[ownerName] = {};
        }
        var warned = false;
        if (ownerName) {
          var warnings = styleWarnings[ownerName];
          warned = warnings[name];
          if (!warned) {
            warnings[name] = true;
          }
        }
        if (!warned) {
          "development" !== 'production' ? warning(false, 'a `%s` tag (owner: `%s`) was passed a numeric string value ' + 'for CSS property `%s` (value: `%s`) which will be treated ' + 'as a unitless number in a future version of React.', component._currentElement.type, ownerName || 'unknown', name, value) : void 0;
        }
      }
    }
    value = value.trim();
  }
  return value + 'px';
}

module.exports = dangerousStyleValue;
},{"166":166,"3":3}],117:[function(_dereq_,module,exports){