Google recaptcha error in ie 11

Question

I am getting the following error in IE 11:

SCRIPT5007: unable to get property \"toString\" of undefined or null reference recaptcha__iw.js (451, 41)

Answer 1

just add this polyfill (taked from cdn.polyfill.io)

(function(undefined) {

// Symbol
// A modification of https://github.com/WebReflection/get-own-property-symbols
// (C) Andrea Giammarchi - MIT Licensed

(function(Object, GOPS, global) {

  var setDescriptor;
  var id = 0;
  var random = '' + Math.random();
  var prefix = '__\x01symbol:';
  var prefixLength = prefix.length;
  var internalSymbol = '__\x01symbol@@' + random;
  var DP = 'defineProperty';
  var DPies = 'defineProperties';
  var GOPN = 'getOwnPropertyNames';
  var GOPD = 'getOwnPropertyDescriptor';
  var PIE = 'propertyIsEnumerable';
  var ObjectProto = Object.prototype;
  var hOP = ObjectProto.hasOwnProperty;
  var pIE = ObjectProto[PIE];
  var toString = ObjectProto.toString;
  var concat = Array.prototype.concat;
  var cachedWindowNames = typeof window === 'object' ? Object.getOwnPropertyNames(window) : [];
  var nGOPN = Object[GOPN];
  var gOPN = function getOwnPropertyNames(obj) {
    if (toString.call(obj) === '[object Window]') {
      try {
        return nGOPN(obj);
      } catch (e) {
        // IE bug where layout engine calls userland gOPN for cross-domain `window` objects
        return concat.call([], cachedWindowNames);
      }
    }
    return nGOPN(obj);
  };
  var gOPD = Object[GOPD];
  var create = Object.create;
  var keys = Object.keys;
  var freeze = Object.freeze || Object;
  var defineProperty = Object[DP];
  var $defineProperties = Object[DPies];
  var descriptor = gOPD(Object, GOPN);
  var addInternalIfNeeded = function(o, uid, enumerable) {
    if (!hOP.call(o, internalSymbol)) {
      try {
        defineProperty(o, internalSymbol, {
          enumerable: false,
          configurable: false,
          writable: false,
          value: {}
        });
      } catch (e) {
        o[internalSymbol] = {};
      }
    }
    o[internalSymbol]['@@' + uid] = enumerable;
  };
  var createWithSymbols = function(proto, descriptors) {
    var self = create(proto);
    gOPN(descriptors).forEach(function(key) {
      if (propertyIsEnumerable.call(descriptors, key)) {
        $defineProperty(self, key, descriptors[key]);
      }
    });
    return self;
  };
  var copyAsNonEnumerable = function(descriptor) {
    var newDescriptor = create(descriptor);
    newDescriptor.enumerable = false;
    return newDescriptor;
  };
  var get = function get() {};
  var onlyNonSymbols = function(name) {
    return name != internalSymbol &&
      !hOP.call(source, name);
  };
  var onlySymbols = function(name) {
    return name != internalSymbol &&
      hOP.call(source, name);
  };
  var propertyIsEnumerable = function propertyIsEnumerable(key) {
    var uid = '' + key;
    return onlySymbols(uid) ? (
      hOP.call(this, uid) &&
      this[internalSymbol]['@@' + uid]
    ) : pIE.call(this, key);
  };
  var setAndGetSymbol = function(uid) {
    var descriptor = {
      enumerable: false,
      configurable: true,
      get: get,
      set: function(value) {
        setDescriptor(this, uid, {
          enumerable: false,
          configurable: true,
          writable: true,
          value: value
        });
        addInternalIfNeeded(this, uid, true);
      }
    };
    try {
      defineProperty(ObjectProto, uid, descriptor);
    } catch (e) {
      ObjectProto[uid] = descriptor.value;
    }
    return freeze(source[uid] = defineProperty(
      Object(uid),
      'constructor',
      sourceConstructor
    ));
  };
  var Symbol = function Symbol(description) {
    if (this instanceof Symbol) {
      throw new TypeError('Symbol is not a constructor');
    }
    return setAndGetSymbol(
      prefix.concat(description || '', random, ++id)
    );
  };
  var source = create(null);
  var sourceConstructor = {
    value: Symbol
  };
  var sourceMap = function(uid) {
    return source[uid];
  };
  var $defineProperty = function defineProp(o, key, descriptor) {
    var uid = '' + key;
    if (onlySymbols(uid)) {
      setDescriptor(o, uid, descriptor.enumerable ?
        copyAsNonEnumerable(descriptor) : descriptor);
      addInternalIfNeeded(o, uid, !!descriptor.enumerable);
    } else {
      defineProperty(o, key, descriptor);
    }
    return o;
  };

  var onlyInternalSymbols = function(obj) {
    return function(name) {
      return hOP.call(obj, internalSymbol) && hOP.call(obj[internalSymbol], '@@' + name);
    };
  };
  var $getOwnPropertySymbols = function getOwnPropertySymbols(o) {
    return gOPN(o).filter(o === ObjectProto ? onlyInternalSymbols(o) : onlySymbols).map(sourceMap);
  };

  descriptor.value = $defineProperty;
  defineProperty(Object, DP, descriptor);

  descriptor.value = $getOwnPropertySymbols;
  defineProperty(Object, GOPS, descriptor);

  descriptor.value = function getOwnPropertyNames(o) {
    return gOPN(o).filter(onlyNonSymbols);
  };
  defineProperty(Object, GOPN, descriptor);

  descriptor.value = function defineProperties(o, descriptors) {
    var symbols = $getOwnPropertySymbols(descriptors);
    if (symbols.length) {
      keys(descriptors).concat(symbols).forEach(function(uid) {
        if (propertyIsEnumerable.call(descriptors, uid)) {
          $defineProperty(o, uid, descriptors[uid]);
        }
      });
    } else {
      $defineProperties(o, descriptors);
    }
    return o;
  };
  defineProperty(Object, DPies, descriptor);

  descriptor.value = propertyIsEnumerable;
  defineProperty(ObjectProto, PIE, descriptor);

  descriptor.value = Symbol;
  defineProperty(global, 'Symbol', descriptor);

  // defining `Symbol.for(key)`
  descriptor.value = function(key) {
    var uid = prefix.concat(prefix, key, random);
    return uid in ObjectProto ? source[uid] : setAndGetSymbol(uid);
  };
  defineProperty(Symbol, 'for', descriptor);

  // defining `Symbol.keyFor(symbol)`
  descriptor.value = function(symbol) {
    if (onlyNonSymbols(symbol))
      throw new TypeError(symbol + ' is not a symbol');
    return hOP.call(source, symbol) ?
      symbol.slice(prefixLength * 2, -random.length) :
      void 0;
  };
  defineProperty(Symbol, 'keyFor', descriptor);

  descriptor.value = function getOwnPropertyDescriptor(o, key) {
    var descriptor = gOPD(o, key);
    if (descriptor && onlySymbols(key)) {
      descriptor.enumerable = propertyIsEnumerable.call(o, key);
    }
    return descriptor;
  };
  defineProperty(Object, GOPD, descriptor);

  descriptor.value = function(proto, descriptors) {
    return arguments.length === 1 || typeof descriptors === "undefined" ?
      create(proto) :
      createWithSymbols(proto, descriptors);
  };
  defineProperty(Object, 'create', descriptor);

  descriptor.value = function() {
    var str = toString.call(this);
    return (str === '[object String]' && onlySymbols(this)) ? '[object Symbol]' : str;
  };
  defineProperty(ObjectProto, 'toString', descriptor);


  setDescriptor = function(o, key, descriptor) {
    var protoDescriptor = gOPD(ObjectProto, key);
    delete ObjectProto[key];
    defineProperty(o, key, descriptor);
    if (o !== ObjectProto) {
      defineProperty(ObjectProto, key, protoDescriptor);
    }
  };

}(Object, 'getOwnPropertySymbols', this));}).call('object' === typeof window && window || 'object' === typeof self && self || 'object' === typeof global && global || {});