how to convert jquery hide/show+animation to javascript? -


i want create left side menu.

i want open , close button.

currently use jquery code:

<script>     $("#openmenu").click(function() {      var menu = $("#menu");     if ($(menu).is(":visible")) {         $(menu).animate({width: 0}, 1000, function() {$(menu).hide();});     } else {         $(menu).show().animate({width: 200}, 1000);                } });     </script>

how can pure javascript?

as gomzy says can use css display property hide menu.

however if want animate need this:

(function () {     var menu = {         //node menu container wish manipulate         node : document.getelementbyid("menu"),         //is menu open?         open : false,         //a handle our interval         interval : null,         //how wide open menu?         openwidth : 200,         //how many pixels should open/close per frame? (speed of transition determined here)         pixelperframe : 10,         //load elements has "togglemenu" class , bind "onclick" event them         init : function () {             //self refer dont confused when handling events             var self = this;             //fetching elements             var togglers = document.getelementsbyclassname("togglemenu");             //looping through elements             (var of togglers) {                 //bind event                 a.onclick = function (e) {                     //here need "self" variable                     self.toggle();                 }             }         },         //open/close menu         toggle : function () {             //self refer dont confused when handling events             var self = this;             //if menu doesn't yet have width modifier, assume menu open             if (self.node.style.width == "") {                 self.node.style.width = self.openwidth + "px";                 self.open = true;             }             //revert menu direction. closes when menu open , opens if menu closed             self.open = !self.open;             //clear previous menus             clearinterval(self.interval);             //setup interval function             self.interval = setinterval(function () {                 //if menu opening                 if (self.open) {                     //add "pixelperframe" width current width of menu                     self.node.style.width = parseint(parseint(self.node.style.width.split("px")) + self.pixelperframe) + "px";                     //if menu wide or wider "openwidth", set width "openwidth" , clears interval                     if (parseint(self.node.style.width.split("px")) >= self.openwidth) {                         self.node.style.width = self.openwith + "px";                         clearinterval(self.interval);                     }                 //if menu closing                 } else {                     //subtracts "pixelperframe" width current width of menu                     self.node.style.width = parseint(parseint(self.node.style.width.split("px")) - self.pixelperframe) + "px";                     //if menu smaller or equal 0 pixels, set width "0px" , clears interval                     if (parseint(self.node.style.width.split("px")) <= 0) {                         self.node.style.width = "0px";                         clearinterval(self.interval);                     }                 }             }, 1000 / 60);         }     }     //runs init     menu.init(); })();

https://jsfiddle.net/g23zr90b/

are there specific reason why don't want use jquery?


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