bc518174
 王天杨
提交两个项目文件
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"use strict";
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
exports.__esModule = true;
exports.default = activeElement;
var _ownerDocument = _interopRequireDefault(require("./ownerDocument"));
/**
* Returns the actively focused element safely.
*
* @param doc the document to check
*/
function activeElement(doc) {
if (doc === void 0) {
doc = (0, _ownerDocument.default)();
}
// Support: IE 9 only
// IE9 throws an "Unspecified error" accessing document.activeElement from an <iframe>
try {
var active = doc.activeElement; // IE11 returns a seemingly empty object in some cases when accessing
// document.activeElement from an <iframe>
if (!active || !active.nodeName) return null;
return active;
} catch (e) {
/* ie throws if no active element */
return doc.body;
}
}
module.exports = exports["default"];
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