(function(){ var print={ lock:true, log:function(param){ if(this.lock){ var element=document.createElement("div"); element.style.background='green' element.style.fontSize='20px' switch (typeof param){ case "string" :element.innerHTML=param;break; case "object":element.innerHTML=JSON.stringify(param);break; } document.body.appendChild(element) } } } window.console=print; })(window) console.log("我哦我我我我我我我哦我") console.log({name:"张三",age:15})