[跨域][zt]chrome报错a parser-blocking, cross-origin script, is invoked via document.write.
https://www.cnblogs.com/jiyang2008/p/6430086.html
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chrome报错a parser-blocking, cross-origin script, is invoked via document.write.
确切的说是警告，内容是：
A Parser-blocking, cross-origin script, http://s4.cnzz.com/stat.php?id=xxx&show=pic, is invoked via document.write. This may be blocked by the browser if the device has poor network connectivity.
错误原因是：页面渲染完成后使用了document.write()（cnzz统计代码引起的，chrome53以上版本会报错。）。
解决方案：将统计代码改为异步加载
复制代码
var cnzz_s_tag = document.createElement('script');
cnzz_s_tag.type = 'text/javascript';
cnzz_s_tag.async = true;
cnzz_s_tag.charset = 'utf-8';
cnzz_s_tag.src = 'https://w.cnzz.com/c.php?id=xxxxxx&async=1';
var root_s = document.getElementsByTagName('script')[0];
root_s.parentNode.insertBefore(cnzz_s_tag, root_s);
复制代码
stackoverflow传送门：http://stackoverflow.com/questions/39610829/a-parser-blocking-cross-origin-script-is-invoked-via-document-write-how-to-ci
