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Thảo luận trong 'Lập trình Web' bắt đầu bởi dinoking, 30/7/05.

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  1. dinoking
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    dinoking Technician Admin

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    Chèn đoạn script sau vo phần nào tùy thích trong thẻ BODY

    Mã:
    <script>
    <!--
    // Boolean variable specified if alert should be displayed if cookie exceeds 4KB
    var caution = false
    
    // name - name of the cookie
    // value - value of the cookie
    // [expires] - expiration date of the cookie (defaults to end of current session)
    // [path] - path for which the cookie is valid (defaults to path of calling document)
    // [domain] - domain for which the cookie is valid (defaults to domain of calling document)
    // [secure] - Boolean value indicating if the cookie transmission requires a secure transmission
    // * an argument defaults when it is assigned null as a placeholder
    // * a null placeholder is not required for trailing omitted arguments
    function setCookie(name, value, expires, path, domain, secure) {
    var curCookie = name + "=" + escape(value) +
    ((expires) ? "; expires=" + expires.toGMTString() : "") +
    ((path) ? "; path=" + path : "") +
    ((domain) ? "; domain=" + domain : "") +
    ((secure) ? "; secure" : "")
    if (!caution || (name + "=" + escape(value)).length <= 4000)
    document.cookie = curCookie
    else
    if (confirm("Cookie exceeds 4KB and will be cut!"))
    document.cookie = curCookie
    }
    
    // name - name of the desired cookie
    // * return string containing value of specified cookie or null if cookie does not exist
    function getCookie(name) {
    var prefix = name + "="
    var cookieStartIndex = document.cookie.indexOf(prefix)
    if (cookieStartIndex == -1)
    return null
    var cookieEndIndex = document.cookie.indexOf(";", cookieStartIndex + prefix.length)
    if (cookieEndIndex == -1)
    cookieEndIndex = document.cookie.length
    return unescape(document.cookie.substring(cookieStartIndex + prefix.length, cookieEndIndex))
    }
    
    // name - name of the cookie
    // [path] - path of the cookie (must be same as path used to create cookie)
    // [domain] - domain of the cookie (must be same as domain used to create cookie)
    // * path and domain default if assigned null or omitted if no explicit argument proceeds
    function deleteCookie(name, path, domain) {
    if (getCookie(name)) {
    document.cookie = name + "=" + 
    ((path) ? "; path=" + path : "") +
    ((domain) ? "; domain=" + domain : "") +
    "; expires=Thu, 01-Jan-70 00:00:01 GMT"
    }
    }
    
    // date - any instance of the Date object
    // * you should hand all instances of the Date object to this function for "repairs"
    // * this function is taken from Chapter 14, "Time and Date in JavaScript", in "Learn Advanced JavaScript Programming"
    function fixDate(date) {
    var base = new Date(0)
    var skew = base.getTime()
    if (skew > 0)
    date.setTime(date.getTime() - skew)
    }
    
    var now = new Date()
    fixDate(now)
    now.setTime(now.getTime() + 31 * 24 * 60 * 60 * 1000)
    var name = getCookie("name")
    if (!name)
    name = prompt("Please enter your name:", "dinoking")
    setCookie("name", name, now)
    document.write("Hello " + name + "!")
    //-->
    </script>
     
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