JSNotes/menu.js at master · CodingNinjasCodes/JSNotes · GitHub

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functionopenIntroductionPage(){
vartabcontent=document.getElementsByClassName("tabcontent");
for(i=0;i<tabcontent.length;i++){
tabcontent[i].style.display="none";
}
vartab=document.getElementsByClassName("tab")[0];
varlistTags=tab.getElementsByTagName("li");
for(i=0;i<listTags.length;i++){
listTags[i].className=listTags[i].className.replace(" active","");
}
document.getElementById("default").style.display="block";
}
functionopenPage(evt,PageName){
localStorage.setItem("last_visited",PageName);
localStorage.setItem("last_visited_link",evt.currentTarget)
if(typeoflocalStorage.visit_history=='undefined'){
localStorage.setItem("visit_history","");
}
document.getElementById("default").style.display="none";

vari,tabcontent,listTags,tab;
tabcontent=document.getElementsByClassName("tabcontent");
for(i=0;i<tabcontent.length;i++){
tabcontent[i].style.display="none";
}
tab=document.getElementsByClassName("tab")[0];
listTags=tab.getElementsByTagName("li");
for(i=0;i<listTags.length;i++){
listTags[i].className=listTags[i].className.replace(" active","");
}
document.getElementById(PageName).style.display="block";
if(evt.currentTarget.className!=" active"){
evt.currentTarget.className+=" active";
}
if(evt.currentTarget.className!=" visited"){
evt.currentTarget.className+=" visited";
}
for(i=0;i<listTags.length;i++){
if(listTags[i].className.indexOf("active")>-1){
localStorage.setItem("last_visited_link",listTags[i].innerHTML);
if(localStorage.visit_history.indexOf(listTags[i].innerHTML)==-1){
localStorage.visit_history=localStorage.visit_history+listTags[i].innerHTML;
}
}
}
}

functionnextPage(){
vartabcontent=document.getElementsByClassName("tabcontent");
for(i=0;i<tabcontent.length;i++){
if(tabcontent[i].style.display=="block"&&i<tabcontent.length-1){
tabcontent[i].style.display="none";
tabcontent[i+1].style.display="block";
localStorage.setItem("last_visited",tabcontent[i+1].id);
break;
}
}
vartab=document.getElementById("ID");
varlistTags=tab.getElementsByTagName("li");
tab.style.overflow="auto";
for(i=0;i<listTags.length;i++){
if(listTags[i].className.indexOf("active")>-1&&i<listTags.length-1){
console.log("test");
// listTags[i].className = listTags[i].className.replace(" active", "");
listTags[i].className=listTags[i].className.replace(" active","");
listTags[i+1].className+=" active visited";
if(i>4){
listTags[i-4].scrollIntoView();
}
break;
}
}
tab.style.overflow="hidden";

for(i=0;i<listTags.length;i++){
if(listTags[i].className.indexOf("active")>-1){
localStorage.setItem("last_visited_link",listTags[i].innerHTML);
if(localStorage.visit_history.indexOf(listTags[i].innerHTML)==-1){
localStorage.visit_history=localStorage.visit_history+listTags[i].innerHTML;
}
}
}
}

functionpreviousPage(){
vartabcontent=document.getElementsByClassName("tabcontent");
for(i=0;i<tabcontent.length;i++){
if(tabcontent[i].style.display=="block"&&i>0){
tabcontent[i].style.display="none";
tabcontent[i-1].style.display="block";
localStorage.setItem("last_visited",tabcontent[i-1].id);
}
}
vartab=document.getElementById("ID");
varlistTags=tab.getElementsByTagName("li");
tab.style.overflow="auto";
for(i=0;i<listTags.length;i++){
if(listTags[i].className.indexOf("active")>-1&&i>0){
// listTags[i].className = listTags[i].className.replace(" active", "");
listTags[i].className=listTags[i].className.replace(" active","");
listTags[i-1].className+=" active visited";
if(i>4){
listTags[i-4].scrollIntoView();
}
if(i<3){
listTags[0].scrollIntoView();
}
}
}
tab.style.overflow="hidden";

for(i=0;i<listTags.length;i++){
if(listTags[i].className.indexOf("active")>-1){
localStorage.setItem("last_visited_link",listTags[i].innerHTML);
if(localStorage.visit_history.indexOf(listTags[i].innerHTML)==-1){
localStorage.visit_history=localStorage.visit_history+listTags[i].innerHTML;
}
}
}
}

window.onload=function(){
varviewPortHeight=document.documentElement.clientHeight;
document.getElementsByClassName("tab")[0].style.height=(document.documentElement.clientHeight-20)+"px";
// If anyone knows why the above line is required please email to manishsherawat1@gmail.com!!
if(localStorage.last_visited!==undefined){
//for switching the display on for the last visited page and turning off the default page
document.getElementById("default").style.display="none";
last_page=document.getElementById(localStorage["last_visited"]);
last_page.style.display="block";

//for setting the last visited page as active in the left side index.

vari,listTags,tab;
tab=document.getElementsByClassName("tab")[0];
tab=document.getElementsByClassName("tab")[0];
listTags=tab.getElementsByTagName("li");
// overflow is set to auto for the menu in order to get the active element in the view.
tab.style.overflow="auto";
for(i=0;i<listTags.length;i++){
if(listTags[i].innerHTML==localStorage["last_visited_link"]){
listTags[i].className+=" active visited";
if(i>4){
listTags[i-4].scrollIntoView();
}
}
}
tab.style.overflow="hidden";
// tab.setAttribute("style","height:500px");


// For setting the previous visited links to visited status
for(i=0;i<listTags.length;i++){
if(localStorage.visit_history.indexOf(listTags[i].innerHTML)>-1){
listTags[i].className+=" visited";
}
}
}
}