CVTE前端笔试 编程题交流

第一题
function test(){ var str = document.documentElement.outerHTML.toString(); var arr = document.getElementsByTagName("*"); var arr2={}; for(var i=0;i<arr.length;i++){ var name = arr[i].tagName; var num = document.getElementsByTagName(name).length; arr2[name] = num;
    } var max = 0; var maxName = ""; for(item in arr2){ if(arr2[item] >= max){ max = arr2[item]; maxName = item;
        }
    } console.log("出现次数最多的标签:<" + maxName.toLowerCase() + ">-出现次数" + max);
} function template(str){ if(str == null || str == "") return function(){ return "请输入模板";
        }; var reg = /^(.*)<%=(.+)%>!$/; if(reg.test(str)){ var res = reg.exec(str); var replace = res[2].trim();
    }else{ return function(){ return "模板不正确";
        };
    } return function(yourObj){ //传入的对象没有值返回空字符串  if(yourObj == null || yourObj == ""){ return "请输入对象";
        } if(yourObj[replace]){ console.log(res[1] + yourObj[replace]) return res[1] + yourObj[replace];
        }else{ return "你要替换的属性不存在";
        }
    }
}