IE兼容模式不支持console的解决办法

在script标签内添加如下代码即可：

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; 
})();