知っておくと便利なDreamweaverのJavaScriptのスニペット(クッキー読み取り)

by iwbjp

JavaScript

function writeCookie(name, value, hours){

  var expire = "";

  if(hours != null){
    expire = new Date((new Date()).getTime() + hours * 3600000);
    expire = "; expires=" + expire.toGMTString();
  }
  document.cookie = name + "=" + escape(value) + expire;
}

//クッキーを24時間保存
writeCookie("myCookie", "my name", 24);

function readCookie(name){
  var cookieValue = "";
  var search = name + "=";

  if(document.cookie.length > 0){ 

    offset = document.cookie.indexOf(search);
	
    if (offset != -1){ 
      offset += search.length;
      end = document.cookie.indexOf(";", offset);
      if (end == -1) end = document.cookie.length;
      cookieValue = unescape(document.cookie.substring(offset, end))
    }
  }
  
  return cookieValue;
}

//保存したクッキーの値をアラートで表示
alert(readCookie("myCookie"));