覺得apache-roller裡面有這個個腳步寫的不錯
JS獲取或者設置cookie,隱藏或者顯示html元素
Js代碼
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. The ASF licenses this file to You
* under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License. For additional information regarding
* copyright in this work, please see the NOTICE file in the top level
* directory of this distribution.
*/
/* This function is used to set cookies */
function setCookie(name,value,expires,path,domain,secure) {
document.cookie = name "=" escape (value)
((expires) ? "; expires=" expires.toGMTString() : "")
((path) ? "; path=" path : "")
((domain) ? "; domain=" domain : "") ((secure) ? "; secure" : "");
}
/* This function is used to get cookies */
function getCookie(name) {
var prefix = name "="
var start = document.cookie.indexOf(prefix)
if (start==-1) {
return null;
}
var end = document.cookie.indexOf(";", start prefix.length)
if (end==-1) {
end=document.cookie.length;
}
var value=document.cookie.substring(start prefix.length, end)
return unescape(value);
}
/* This function is used to delete cookies */
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";
}
}
function rememberUser(theForm) {
var expires = new Date();
expires.setTime(expires.getTime() 24 * 365 * 60 * 60 * 1000); // sets it for approx 365 days.
// sets it for entire domain, so freeroller will remember for all users
setCookie("commentAuthor",theForm.name.value,expires,"/");
setCookie("commentEmail",theForm.email.value,expires,"/");
setCookie("commentUrl",theForm.url.value,expires,"/");
}
function forgetUser(theForm) {
deleteCookie("commentAuthor","/");
deleteCookie("commentEmail","/");
deleteCookie("commentUrl","/");
}
/* This function is used to show/hide elements with a display:none style attribute */
function toggle(targetId) {
if (document.getElementById) {
target = document.getElementById(targetId);
if (target.style.display == "none") {
target.style.display = "";
} else {
target.style.display = "none";
}
}
}
/* The toggleFolder and togglePlusMinus functions are for expanding/contracting folders */
function toggleFolder(targetId) {
var expanded;
if (document.getElementById) {
target = document.getElementById(targetId);
if (target.style.display == "none") {
target.style.display = "";
expanded = true;
} else {
target.style.display = "none";
expanded = false;
}
togglePlusMinus("i" targetId);
// set a cookie to remember this preference
var expires = new Date();
expires.setTime(expires.getTime() 24 * 365 * 60 * 60 * 1000); // sets it for approx 365 days.
setCookie("rfolder-" targetId,expanded,expires,"/");
}
}
function togglePlusMinus(targetId) {
if (document.getElementById) {
target = document.getElementById(targetId);
if (target.innerHTML == " ") {
target.innerHTML = "-";
} else {
target.innerHTML = " ";
}
}
}
/* This function is to set folders to expand/contract based on a user's preference */
function folderPreference(folderId) {
var folderCookie = getCookie("rfolder-" folderId);
if (folderCookie != null) { // we have user's last setting
folder = document.getElementById(folderId);
plusMinus = document.getElementById("i" folderId);
if (folderCookie == "true") { // show
folder.style.display = "";
plusMinus.innerHTML = "-";
} else { // hide
folder.style.display = "none";
plusMinus.innerHTML = " ";
}
}
}
function toggleNextRow(e) {
if (e.type == "checkbox") {
var checked = e.checked;
} else if (e.type == "radio") {
var v = e.value;
var checked = (v == "1" || v == "y" || v == "true") ? true : false;
}
// var nextRow = e.parentNode.parentNode.nextSibling;
// the above doesn't work on Mozilla since it treats white space as nodes
var thisRow = e.parentNode.parentNode;
var tableBody = thisRow.parentNode;
var nextRow = tableBody.getElementsByTagName("tr")[thisRow.rowIndex 1];
if (checked == true) {
nextRow.style.display = "";
} else {
nextRow.style.display = "none";
}
}
function toggleControl(toggleId, targetId) {
var expanded;
if (document.getElementById) {
target = document.getElementById(targetId);
toggle = document.getElementById(toggleId);
if (target.style.display == "none") {
target.style.display = "";
expanded = true;
} else {
target.style.display = "none";
expanded = false;
}
togglePlusMinus("i" targetId);
// set a cookie to remember this preference
var expires = new Date();
expires.setTime(expires.getTime() 24 * 365 * 60 * 60 * 1000); // sets it for approx 365 days.
setCookie("control-" targetId,expanded,expires,"/");
}
}
function isblank(s) {
for (var i=0; i<s.length; s ) {
var c = s.charAt(i);
if ((c!=' ') && (c!='n') && (c!='')) return false;
}
return true;
}
// Show the document's title on the status bar
window.defaultStatus=document.title;
[火星人 ] JS獲取或者設置cookie,隱藏或者顯示html元素已經有545次圍觀
