Method getField

packages/blockly/core/block.ts:1130–1145

* Returns the named field from a block. * * @param name The name of the field. * @returns Named field, or null if field does not exist.

(name: string)

   * @returns Named field, or null if field does not exist.
   */
  getField(name: string): Field | null {
    if (typeof name !== 'string') {
      throw TypeError(
        'Block.prototype.getField expects a string ' +
          'with the field name but received ' +
          (name === undefined ? 'nothing' : name + ' of type ' + typeof name) +
          ' instead',
      );
    }
    for (const field of this.getFields()) {
      if (field.name === name) {
        return field;
      }
    }
    return null;
  }

  /**
   * Returns a generator that provides every field on the block.