检测浏览器是否支持Web Storage

function checkStorageSupport(){
    //sessionStorage
    if(window.sessionStorage){
        alert('This browser supports sessionStorage');
    }else{
        alert('This browser does not supports sessionStorage');
    };
    //localStorage
      if(window.localStorage){
        alert('This browser supports localStorage');
    }else{
        alert('This browser does not supports localStorage');
    };
}