localStorage.js

localStorage.js

(function (lstorage) {
  lstorage.set = function(name,val) {
    while(true) {
      var key_name = '', old_dt = Date.now();
      try{
        localStorage.setItem(name, window.JSON.stringify({
          'data':val,
          'dt':Date.now()
        }));
      }
      catch(e) {
        Object.keys(localStorage).forEach( function(val) {
          var obj = window.JSON.parse(localStorage.getItem(val));
          if (obj.dt < old_dt) {
            old_dt = obj.dt;
            key_name = val;
          }
        });
        if ( key_name != '' ) {
          localStorage.removeItem(key_name);
        }
      }
      if ( key_name == '' ) break;
    }
  }
  lstorage.get = function(name) {
    var obj = window.JSON.parse(localStorage.getItem(name));
    if (obj) return obj.data;
    return null;
  }
  lstorage.clear = function() {
    localStorage.clear();
  }
})(osapon.lstorage = osapon.lstorage || {});