cookie的封装

function setCookie(key,val,options){
    options = options || {};
    var expires="";
    if(options.expires){
        var d = new Date();
        d.setDate(d.getDate()+options.expires);
        expires = ";expires="+d;
    }
    var path = options.path ? ";path="+options.path : '';
    document.cookie = `${key}=${val}${expires}${path}`;
}
//删
function removeCookie(key,options){
    options = options || {};
    options.expires = -1;
    setCookie(key,'10',options); 
}
//查
function getCookie(key){
    console.log(document.cookie);
    var arr = document.cookie.split('; ');
    for(var i=0;i<arr.length;i++){
        if(arr[i].split('=')[0]==key){
          return arr[i].split('=')[1];
        }
    }
    return '';
}