cannot read property 'msie' of undefined

//在代码中加上
<script type="text/javascript">
    jQuery.browser = {};
    (function () {
        jQuery.browser.msie = false;
        jQuery.browser.version = 0;
        if (navigator.userAgent.match(/MSIE ([0-9]+)\./)) {
            jQuery.browser.msie = true;
            jQuery.browser.version = RegExp.$1;
        }
    })();
</script>

参考：https://blog.csdn.net/niexia_/article/details/78021821?locationNum=2&fps=1