Created
September 17, 2017 19:35
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Web Cookies for Everyone example
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script> | |
| const setCookie = (key,val,days_till_expiration) => { | |
| let d = new Date(); | |
| d.setTime(d.getTime() + (days_till_expiration*24*60*60*1000)); | |
| const expires = "expires=" + d.toGMTString(); | |
| document.cookie = key + "=" + val + ";" + expires + ";"; | |
| } | |
| const fetchCookie = () => { | |
| const name = "username" + "="; | |
| const cookie_array = document.cookie.split(';'); | |
| for(let i = 0; i < cookie_array.length; i++) { | |
| let c = cookie_array[i]; | |
| if (c.indexOf(name) == 0) { | |
| return c.substring(name.length, c.length); | |
| } | |
| } | |
| return ""; | |
| } | |
| const getUserData = () => { | |
| let username = fetchCookie(); | |
| if (username != "") { | |
| alert("Welcome again " + username); | |
| } else { | |
| username = prompt("Please enter your name:",""); | |
| setCookie("username", username, 30); | |
| } | |
| } | |
| const alertCookie = () => { | |
| alert(document.cookie); | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <h1>Cookies for everyone!</h1> | |
| <button onclick="getUserData()">Check for Cookies</button> | |
| </body> | |
| </html> | |
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