console在ie下不兼容的问题（console在ie9下阻碍页面的加载，打开页面一片空白）

在页面中加入以下代码：

window.console = window.console || (function() {
var c = {};
c.log = c.warn = c.debug = c.info = c.error = c.time = c.dir = c.profile = c.clear = c.exception = c.trace = c.assert = function() {};
return c;
})();