JavaScript - display keys and values of an array -


i'm playing module object , trying create sort of blog (it's not going used in real life - me learning stuff). when user fills form , provides tag, checks whether tag exists in associative array, if not, adds value = 1. if tag exists, adds +1 value. want display on side how many entries each tag there are, eg:

cooking(3) sport(1)

it seems partially work when add tag, displays in keeps increasing count of categories/tags:

cooking(1) sport(1)

then

cooking(2) sport(2)

...not 1 user has added.

var myarticles = (function () {     var s, articles;      return {          settings: {             articlelist: "articles", // div generated articles             articleclass: "article", // class of article             articleindex: 0,             sidebar: document.getelementbyid("sidebar"),             taglist: {},             // cats: object.keys(this.settings.taglist)         },          init: function() {             // kick things off             s = this.settings;             articles = document.getelementbyid(this.settings.articlelist);         this.createarticle();         },          createarticle: function() {             var div = document.createelement("div");         var gettag = document.getelementbyid("tag").value;         var gettitle = document.getelementbyid("title").value;          // add classes         div.classlist.add(this.settings.articleclass, gettag);          // add title / content         var title = document.createelement("h2");         var textnode = document.createtextnode(gettitle);         title.appendchild(textnode);         div.appendchild(title);          // add category         div.innerhtml += "article" + this.settings.articleindex;             articles.appendchild(div);             this.settings.articleindex +=1;         this.updatecategories(gettag);         },      updatecategories: function(tag) {          // create header         this.settings.sidebar.innerhtml = "<h3>categories</h3>";          // create keys , count them         if (tag in this.settings.taglist) {         this.settings.taglist[tag] += 1;         } else {         this.settings.taglist[tag] = 1;         }          var cats = object.keys(this.settings.taglist);          // create unordered list, assign class , append div="sidebar"         var ul = document.createelement('ul');         ul.classlist.add("ul-bare");         this.settings.sidebar.appendchild(ul);          // iterate on array , append each element li         (var i=0; i<cats.length; i++){         var li=document.createelement('li');         ul.appendchild(li);         li.innerhtml=cats[i] + "(" + this.settings.taglist[tag] + ")";         }     }     }; }());

and html:

 <body>     <div id="container">     <h1>my articles</h1>     <div id="genarticle" class="left">       <form id="addart" method="post">     <div>           <label for="title">title</label>           <input type="text" id="title" class="forma" placeholder="title" required />     </div>     <div>           <label for="tag">tag</label>           <input type="text" id="tag" class="forma" placeholder="tag" required />     </div>     <div>           <label for="art">article</label>           <textarea id="art" class="forma" required /></textarea>     </div>     <input type="button" onclick="myarticles.init()" value="add art">     <input type="reset" value="reset form">     <input type="range" size="2" name="satisfaction" min="1" max="5" value="3">       </form>       <div id="articles"></div>      </div> <!-- end of genarticle -->     <aside id="sidebar" class="right">     </aside>     </div> <!-- end of container -->      <script src="js/script.js"></script>   </body>

i think line wrong

li.innerhtml=cats[i] + "(" + this.settings.taglist[tag] + ")";

it this.settings.taglist[cats[i]]

not this.settings.taglist[tag]


Comments

Post a Comment

Popular posts from this blog

authentication - Mongodb revoke acccess to connect test database -

i have ec2 instance mongodb 3.2.0 installed. have user admin access. can connect user , perform operation remotely. 1 can connect database test remote if knows ip mongo 11.11.11.11. although not able make operations, want restrict access user credentials can connect server. first need create users , grant roles users, example: use admin db.createuser( { user: "myuseradmin", pwd: "abc123", roles: [ { role: "useradminanydatabase", db: "admin" } ] } ) then need start server --auth parameter mongod --auth more information here
Read more

r - Update two sets of radiobuttons reactively - shiny -

i have read ( how make choices in radiobuttons reactive in shiny? ) shows me how update radiobutton s in reactive way. however, when try , update 2 sets of buttons same data, 1 set renders. example: server: # create example data wafer <- rep(c(1:3), each=3) length <- c(1,1,2,1,1,1,3,5,1) width <- c(3,1,6,1,1,1,1,1,6) dd <- data.frame(wafer, length, width) shinyserver(function(input, output, session){ # create reactive dataframe store data values <- reactivevalues() values$df <- data.frame() # lengths , widths of wafer user input <- eventreactive(input$do, { subset(dd, wafer %in% input$wafer, select = length:width) }) # update reactive data frame lengths , widths have been selected user input observe({ if(!is.null(a())) { values$df <- rbind(isolate(values$df), a()) } }) output$wl <- renderdatatable({ a() }) # update radio buttons unique length , widths stored in values$df # ever "observe" put first in co...
Read more

ios - Realm over CoreData should I use NSFetchedResultController or a Dictionary? -

i'm working on app using core data , nsfetchedresultcontroller many reasons switch use realm. saw there "realm version" of nsfetchedresultcontroller on github wouldn't compatible current code using core data. the view controller displaying list of people same school, address book. list sublist of people studied in same city. so thinking make 1 unique request database retrieve list of people , filter locally list within 1 dictionary per school [string: anyobject] string section name within tableview , anyobject array of people. first solution, make nsfetchedresultcontroller each school predicate filtering location. delete actions etc.. handled delegates -> not compatible realm create dictionaries , update them each actions... -> works realm it's annoying code. any better solution? edit: i need clarify request: i'd write class inherit uitableviewcontroller. this class has list of people sorted in alphabetical order the tableview has ...
Read more