JS对cookie的操作
1、设置cookie
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function addCookie(objName, objValue, objHours) { //添加cookie |
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var str = objName + "=" + escape(objValue); |
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if (objHours > 0) { //为时不设定过期时间，浏览器关闭时cookie自动消失 |
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var date = new Date(); |
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var ms = objHours * 3600 * 1000; |
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date.setTime(date.getTime() + ms); |
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str += "; expires=" + date.toGMTString(); |
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} |
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document.cookie = str; |
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} |
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//两个参数，一个是cookie的名子，一个是值 |
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function SetCookie(name, value){ |
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var Days = 30; //此 cookie 将被保存 30 天 |
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var exp = new Date(); //new Date("December 31, 9998"); |
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exp.setTime(exp.getTime() + Days * 24 * 60 * 60 * 1000); |
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document.cookie = name + "=" + escape(value) + ";expires=" + exp.toGMTString(); |
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} |
2、读取cookie
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function getCookie(name) { |
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var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)")); |
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if (arr != null) return unescape(arr[2]); |
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return null; |
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} |
3、删除cookie
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//删除cookie |
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function delCookie(name) { |
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document.cookie = name + "=;expires=" + (new Date(0)).toGMTString(); |
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} |
