js页面缓存类

JavaScript代码

 

Code
var Storage = new Class({   
    initialize: function(name){   
this.name = name || 'storage';   
if (window.ie) {   
this.storage = new Element('span').setStyle("behavior","url('#default#userData')").injectInside(document.body);   
        } else if (globalStorage) {   
this.storage = globalStorage[location.hostname];   
        }   
    },   

    get: function(key) {   
if (window.ie) {   
this.storage.load('storage');   
return Json.evaluate('(' + this.storage.getAttribute(key) + ')');   
        } else if (this.storage) {   
var data = Json.evaluate('(' + this.storage.getItem(this.name) + ')');   
return (data) ? data[key] : null;   
        } else {   
return false;   
        }   
    },   

    set: function(key, value) {   
if (window.ie) {   
this.storage.setAttribute(key, Json.toString(value));   
this.storage.save('storage');   
        } else if (this.storage) {   
var data = Json.evaluate('(' + this.storage.getItem(this.name) + ')');   
if (!data) data = {};   
            data[key] = value;   
this.storage.setItem(this.name, Json.toString(data));   
        } else {   
return false;   
        }   
return true;   
    },   

    clear: function(key) {   
if (window.ie) {   
this.storage.removeAttribute(key);   
this.storage.save('storage');   
        } else if (this.storage) {   
var data = Json.evaluate('(' + this.storage.getItem(this.name) + ')');   
if (data) data[key] = undefined;   
this.storage.setItem(this.name, Json.toString(data));   
        } else {   
return false;   
        }   
return true;   
    }   
});

转载于:https://www.cnblogs.com/200831856/articles/jsA.html