js的window.open()改写

说明：window.open(url,"_blank")方法替换如下：

function openUrl(url) {

        try {

            if (/MSIE\s*(\d+\.\d+);/.test(navigator.userAgent) || /MSIE(\d+\.\d+);/.test(navigator.userAgent) || navigator.userAgent.indexOf('MSIE') >= 0 || navigator.userAgent.indexOf('msie') >= 0) {

                var referLink = document.createElement('a');

                referLink.href = url;

                referLink.target = "_blank";

                document.body.appendChild(referLink);

                referLink.click();

            } else {

                var a = $("<a href='" + url + "' target='_blank'>download</a>").get(0);

                var e = document.createEvent('MouseEvents');

                e.initEvent('click', true, true);

                a.dispatchEvent(e);

            }

        } catch (e) {

            window.open(url);

        }

    }

简单的说就是构造 <a href="#" target="_blank">A标签打开新页</a> 这代码，然后模拟点击事件。这里仅仅是替换window.open（）这方法。