showing results for - "what is const in javascript"
Lena
20 Jul 2018
1// var declares a variable, meaning its value will vary. 
2// const declares a constant, meaning its value will remain 
3// consistant and not change. 
4// If your variable changes throughout the program or website, 
5// declare it using a var statement. 
6// Otherwise, if its value does not change, declare it using 
7// a const statement. 
8
9const myConst='A const does not change.';
10
11var myVar='A var does change.';
12
13var myVar=2;
Guillaume
12 Sep 2020
1const elem = document.getElementById('elementID');
Valerio
26 Jan 2017
1// The const keyword was introduced in ES6 (2015).
2
3// Variables defined with const cannot be Redeclared.
4
5// Variables defined with const cannot be Reassigned.
6
7// Variables defined with const have Block Scope.
Kennedy
27 Jan 2020
1/*The destructuring assignment syntax is a JavaScript expression that
2makes it possible to unpack values from arrays, or properties from objects,
3  into distinct variables.*/
4  let array = [2,3]; 
5  [a,b] = array;// unpacking array into var a and b
6  console.log(a); //output 2
7  console.log(b); //output 3
8  let object = {name:"someone",weight:"500pounds"};
9  let {name,weight} = object; // unpacking object into  var name and weight
10  console.log(name);// output someone
11  console.log(weight);//output 500pounds
12
13//it i similar as doing this
14/*
15var a = array[0];
16var b = array[1]
17var name = object.name;
18var weight = object.weight;
19
20 */
Jan
03 Apr 2017
1static methodName() { ... }
2static propertyName [= value];
3
queries leading to this page
const function 3d 28 29 3d 3e 7b 7dis const function javascriptjavascript const number variblejavascript const objjavascript var versus constjavascript contconst 7b object 7d const name 28 29 3d 3e 7b 7djs constant variablevar operator 2b 28const var 26 data 29 const add value to another var object const 5b 7b 7d 5dnodejs var or constconst javascwhy use const in javascripthow to call a constant in jquery javascript var vs let vs constvar let const in jsjs create constantconst let varjs objects inside constjs const declaration order 3fconst 7b 7d node jsjs const 5b 5d updateconstants ext jsconst declaration in javascriptjscript constjavascript const setare consts global in javascrit 3dptarray of consts jsnon const variable in javascriptconstanta jsconst 7b 7d from objectjs const 7b 7d 3d objecthow to declare a array const jsconst means in javascriptconstant object jswhy we use const instead var in javascriptjavascript defining constantsconst 5b 5d 3d somethingjavascript let const varjs 7bconst 7d 3djavascript create const objectconst in javascript examplenodejs constconst javascript installjavascript const syntax exampleconst es6how to use const in javascriptjavscript constconst meaning in javascriptjavascript const 7b some 7d 3d thisconst a 3d 1 in 5b 5d in javascriptconst object 3d 7bjavascript const vs var examplejavascript public constjavascript declare const inside functionhow to define constant in javascript in before es5js const varlet var const in jshow to add to a constant object array javascriptconst 7b content 7d 3d attributesconst function javascriptadding constant in javascriptvar let or constjs const 7belement 7d 3d objectconstant object javascriptconst 7b 7d 3d objectwork on constnode js constwhat is mean by const freeerror 3d 7b error 7d 3bwhat does const do in jsjavascript constant in stringjavascript documentation constwhy const in javascriptis var constconstant javascript objectjavascript constantsconst value in objectconst variable javascriptvar const jsjavascript make const globalconst variables in javascript 3fjava script const functionjavascript constant that will not get changed typing conventionmeaning of const in javascriptconst in object javascriptconst javascript convert to javavar vs let const javascripti have html content in a javascript const how to display itvariable const javascriptjavascript const to new objectdefine constant in jsjavascript object constjavascript const object can be changedconst asjavascript use var or constkey word for constants jsconst a b method in javascriptconst keyword in javascriptjavascript const as a functionconst 7b abc 7d in nodejsjs const assign value from follow constjavascript constjavascript const casewhat types of things can javascript constant beconst with js objecttype const javascriptwhat is a conststore an array in const javascripthow to print the value of const in jswhats a constant and a variable in javascriptconstants in javascriptconst var but constant javascripthow to change a constant variable in javascriptjs const 7b 7dhow to use const 7b 7dconst object new value jsexamples for const variable in javascript programsconst i javascriptvar let const jsjs const name 3d 28 29const object 3d 7b 7dconst element jsor const javascriptconst show 3d 28value 29 3d 3ewhat is constant in javascriptwhat does const mean jsjavascript constacont in jsusing const for a function in javascriptlet vs const vs var javascriptjavascript cost vs let vs varjs const functionkonstants in jsnode js const in a thenconst 26var or const var 26const user of two javascriptdeclaring const function javascriptlog constconst in js docsfull form of const in jsconst javascript class scope how to use thislet name 3d 22name 22 as const 3barray constant jsis const available in funciton javascriptjavascript const stribngwhat is java script constadd variable into const nod e jsis const global in javascriptvar and const in javascriptwhat does const mean in javascriptconst in js with data and methodsadd const to number javascriptconst 7b object 7d javascriptmozilla javascript constantconstants jsconst 7bvar 7d in javascriptaccess global cont jsjavascript const 22 7c 22overwrite const objectconstant in jsconst 7bjavascript const 5b 5d 3d meaningconst 7b var 7d javascriptwhat is a const in javascriptjs constant changes on modeljs const 7b 7djavascript const variable with function returnuse of const in javascripthow to declare constant variable in javascriptjavascript object constantjson to const jsconst 5b 7b test 7d 5d jsjavascript const object functionhow to make constant in jsconst in javascript scripconst and let jsconst 7b 28 29 7dconstants js in nodejsconst 3d thiswhat is a javascript constant objectfrom var to const javascriptconst 5b 5d 3dobjectconst 3d 3e functionjs constantesshould i use var or const when making a instance of date 28 29 in javascriptconst variable function javascriptconst 7b 7d javascriptjs const keywordhow to change constant variable in javascriptjavascript const varjson const 7b name 7d 3d jsdeclaring function as constant javascriptjs string to constconstjavascript constant objectcant define const variable jsjavascript const to intjavascript constructor constant var vs constconst str javascriptwhy do we use const to define variable in javascriptparse constant jsconstant javascripthow to create const object in javascriptjs constant propertyhow to create a static const string in javascriptshow to declare const in jsdefine const in jslet const jsjavasript con or constdefine a constant in javascriptjs let vs var vs constconstant jsconst js write out messageconst and let in javascriptjavascript how to set variable constantwhat is const 5bel 5d 3djavascript make public member constcan a javascript constant be an arraycan you declare a constant inside function in javascriptchange const javascriptwhat is a const 24 jsscope of const variables jsjavascript new const 28 29es6 scoped const declarationjavascript const and varwhat is a const variable in javascript 3fhow to change const value in javascriptwhat are constants in jsconst var letconst variablecan we change the value of constant variable in javascriptnode use const with same name as global constjavascript const 3d objectconst in ajvascriptconst errorwhat does const 7b 7d mean in javascriptconst 3d in javascripthow to make elements in js class consthow to display a const in javascriptwhat is a const statement in javascriptjavascript have constantswhen to use a constant in javascripthow to read data from constant object type in javascriptjs const arrayhow to store api and param as constant in javascript add something to a constant in javascriptconstant in javascriptconst in javascript functionjs for of constjs redefine const in blockconst in es5constant function in javascriptconst variable in jqeuryjs const object returnconst property in data fields valuewhat is const a 3d 28 29 3d 3e 7b 7d in javascri 5btset value in const object jsvar let const javascripthow to define a const type in javascriptconst 5b 2c 5d jsconst object jsconst in jsconstin jshow to use constant in the form of model in htmlhow to const arry in javascriptconst obj 3d 7b 7d 3bjavascript define const objectconst keyword javascriptjavascript const 7b 7djs constantsjavascript global constantjavascript using const ecalling a const in jqueryjavascript const browser supportconst 3d 28 29 3d 3e 7b 7dwhen to use var let and const in javascriptjavascript array as constconst variable and assign valuewhat is var and const in javascriptoutput constant jsadd value on const variablesconst int jsvar let and constvar vs let 2fconsts javascriptjavascript const 7b 7d 3d javascript const object examplesmake a const jsconst in javascript explainedif true then assign const javascriptconst and var in jsconst array javascriptconst obj javascriptjava script const objectconstants in nodejswhy is const not reassign in javascriptjavascript constantesjavascript constant stringdifference between let const and var in javascriptconst count 3d 7b 7d 3b in jsconstante values javascriptwhy array can be const jsmodify const javascriptconst js functioncan we use const for an array jscan 27t read const in another function javascriptpurpose of const in javscriptjavascript const inconst jquerydefining constant inside block and using outside jsjs contvar vs const javascriptconst 5b 5d 3dinclude for const in jsconst obj in jsjavascript const referencees6 constvar vs const in jsdifference between var 2c let and const in javascript with exampleobject to const javascriptconst 28 29 7b 7dconstants in javasriptconst object 3d new objectjquery continuous variable with elementjavascript const var 3d x 3d 3e 28 29what is const nodedefine const object javascriptdeclare constant javascriptdoes const 7ba 7d and const a are different javascriptjavascript cosntantsconstant const in javascriptin javascript 2c variables that are created with the constwhat is a constant jshow to write constants to a javascript classnodejs get const from arraywhat are constants in javascriptjs store constant valuevar or const in javascriptconst in javascriptconst 7b object 7d 3dvar const which is imutablejs var or constdifference between const and var in javascriptconst setismarkon 3d 28 29 3d 3e gcurrtxt ismark 3d true 3bjs let vs const vs varjavascript const 7bjavascript get const valueconst object javascript exampleconst 3d 28 3a 29 3a 3d 3ejavascript what is constconst variable questions in javascriptdeclare object constant in javascripthow to add a const in javascriptconst in javascriptwhat does const var require means jsfunction declrataion javascript constconst vs vares6 const variablesconst vs letconst javascriptconst 5b 2c variable 5d javascriptmaking a const in jqueryconst a 3d 7b 7d 3b systax meaningjavascript define constjs const vs varjavascript what is const functionjavascript how to console log a const in a functionjs const propertyconst data 3d 5b wht const is a variable in javascriptdeclare const in javascriptwhat is the const in javascripthow to declare variable and const in javascriptwhat is a const variable in javascriptvar 3d const 3f 3f javascriptwhat does const mean in jsdefining a constant in javascriptwhat is const new in jsassign a value to constant and use in htmljavascript onstwhat is use of constant in javascriptlet vd constconst converttodms 3d 28src 29 3d 3econstante in jsconst variable meaning in javascriptadd constants to symbol jsconst variable in node js jsonconst mean in jsjs const objecthow to create a constant in javascriptconst keyword jsconst 5b 2c what is const in jsconst 7bvalue 7d meaning in javascriptjavascript const 7bvalue 7d 3d econst in es6const let or varconst scopeusing const with a numberjavascript const 7b 7ddefine constants in node jsjquery constantscreate constant in javascriptchange const name javascript2 true statements for constants jsjavascript array const afterwhats constconst array jsjavascript constantalternative to var 3f letadd constant in string jswhat is a const javascriptwhat is var let and const in javascriptjavascript const vs varvar let constjavascript let vs var vs constwhat is const variable in javascriptjavascript const 7b 7d 3d objectconst vs var vs let javascripterror changing a const jshow to use constant in function javascriptjs const ofconst stackstyles 3a istackstyles 3d 7b 7d how to declar jsassign value of a const javascriptjs type constconst 3d 7b 5b 5d 7dwhat is consthow to declare constant variable in constant variable in javascriptconstant variable jshow to define global const in javascriptwhat const exactly mean in javascriptconst variable 3d 7b body 3aconst 7b 7d 3d valuewhen to use let and const examplesw3 constcreateing an array in javacript constconst 5by 2c x 5d javascriptjs value or constjavascript const function 3d meaningwhy we use const on array in javascriptconst 7b 7d 3d in javascriptconst 7b 7d 3d jsassign function to constconst element 5bi 5dconst object 3d 7b 7d in javascripthow take const name jsconst 3d 28 29 3d 3econst function js 5cjs constconst 23how to return a const variable in javascriptconst javascript functionwhat is a const with 24 sign jsconst vs let javascriptwhat is let and const 22const 7b 7d 22const 7b object 3a 7b 7d 7d in jsconst nodejsjavascript change const valueconst 7b 7d 3d 7b 7d jscan const reference an object in javascriptconst function jsconst 7bvalue 7d 3d objectconst el 3d 28 29 3d 3e 7b 7d use in javascript declaring const in thenjavascript define constantconst dic js classconstante en javascriptjs this const objectdifferent const jsconst javascript error checkconst let var javascriptjavascript var vs constjavascript declare constantwhen to use const and let in javascriptaccept const values in jsjavascript change field in a const objectconstant condition jsjavascript const objecthow to add two const in javascriptjava script constconst data 3d 5b this what is const 5b and 5d in javascriptjavascript array constconst 28 29 javascripthow many times can you declare the const javascriptis const a variable in javascriptjavasciprt const 7b x 5dwrite a const formula javascriptjavascript constants in constructorassign value to const null jshow to get the value of a const jscreate const in js then assign valueusing const in javascripthow to define constants in javascript classconst with objectglobal constant javascriptjs constant objectjavascript how to make a property a constwhat is const 7b 7d in javascriptconstante javascriptconst 7b 7dconstant value javascripthow to set a constant in javascripthow to convert javascript const to php constconstants in jshow to declare const that can have any valueconst 7b 7d in jsjavascript how to place a constant in functionjs const 7b var 7dvar vs const in node jsjavascript const declareconst object 3d 5bempty const javascriptconstant var javascriptconst 3d 3e 7b 7dobject const in javascriptadd variable into const node jshow to create object from const javascriptjavascript var let constwhat is a constant variable in javascripthow to covert var to const es6ec6 const functionwhat is javascript const 7bop 7dconst 5b 2c 5d javascriptconstant array in javascriptconst 3d 28 29 3d 3e const declaration after and and javascriptconst 7b var 7d 3dconst 7b 7d 3d name jshow to declare a const in javascriptconst 7b variable 7dmake constants from array of objects javascriptjavascript constants name limitationsjavascript when to make a consthow to write a function with constant in javascriptconstant in javascript constconst javascript with 3 valueshow to call constant from one class to another in javascriptjs object constcant read const in other function javascriptjavascript const object variablelet and const in javascriptwhere to put const in javaascriptwhy can you modify a const array javascriptjavascript assign constjavascript var let and constjavascript get constants from functionaccess a const in javascriptconst max cycles 3d 2 in jsjavascript const variablehow to declare constant in javascriptwhat is javascript constconst objjs const declarationconst 7b a 7djavascript define a constant objecthow to make a list of const in javascripthow to define a type of const in javascriptlet vs const vs varconst var jsjs const 7bvarname 7djs array inside const definitionjavascript const 3d string constant jsdeclare constants in javascriptconst 24a define constant jsvar vs let vs constget constant in javascriptjavascript can a const variable be readconst 2b 3d 1use constant javascript in htmlshould you create constants for element id 27s in jsconst meaning in jscreateing an object in javacript constdefining a constant in jsjs const var 3d 28 29variables javascript const varconst variable jsjavascript change const value through another variableconst jslet const vs varjavascript const with 3d 3econst in javscriptjavascript syntax declare two const as output of functionconst variablesnode js what does it mean when const 7b 7djavascript create a var from a constjs declare constant objectconstant expression javascriptconst as javascriptconst variable mobile javascriptjava script constantsjavascript const 3d 3d 3ehow to print a const varaible in js file to htmlobject call in a constant variable in javascriptarray const in jsjavascript const between pagesconstant variable in javascriptjavascript variabel constget value of a prop and asssing as constant javascriptdeclare constant in javascriptvar const letfunction in constant javascriptwhat is the purpose os javascript constant can be stored retirved and initializejavascript constant variableconstant declaration in javascriptdifference between const input const 7binput 7d jsconst user 3d 5b 5dhow is const no editable in javascriptwhat is const in javascripitvar let and const in javascriptcan you declare a const in js objectuse value of cosnt scriptjavascript constant variable assign laterstring constants javascriptconst 7b 7djavascritp constconst javascript objectis const objectjs declare a list of constantsconst js 28 29 3d 3e 7b 7dwhat is const javascriptwhat is const 7b 7dmake a return const available in javascriptwhat does const mean in javasascirptconst object 3d 7b 7d 5b 5d 3b javascriptjavascript assign to constant let var 3d consta constant reference to a value in jsjavascript const functionvariable and constant in javascriptwhat is a constant in javascriptjs 5calert a constvariables in javascript constjs const name 3d 7b 5bnumber 5d 3a 27string 27 7dconst 7b i 7ddefine javascript constant with address bar parameter 7bi 2cx 2cy 7d 3d const jsjavascript objects with constconst 7b 7d jsjavascript const vd etvar vs const vs letconst 3d javascriptjavascript what does constant do to an arraymy const is an object javascriptjavascript constant checkaccess global const jsnode js sending constant data examplejquery constjavascript initializing a const before definitionjs what is constconst var 3d 28 29 3d 3eset const from string javascripthow to get const data jsconst javascript meaningconst 3d var jsconst y 3d x 27one 27 27two 27 console logconst in javascript meansjs define constant by element idconst 7b 7d 3d varjavascript using constant objectwhat is a javascript constant object in javascriptwhen to use var and const in javascriptvar and constconst 7b 7d 3d object in javascriptconst movie 3d db models what does this mean in javascriptjavascript const syntaxconst 3d 28 7b 7d 29 3d 3e 7bexample of const variable in javascriptconst object as aconst javascript stringcreate constant jqueryjs const with objecthow to make non const in javascripjs const 5bx 2cy 5d 3d varjavascript const or letconst message 3d 28 29 3d 3e 7b return rowstyling 28 29 7d2 numbers in a const javascriptconst data 3d 7b 7d javascriptwhen to use const and when to use var in jqueryconst 7b 7d 3d variableconst error javascriptconst of jses6 let and consthow to declare const variable in jsarray constuse a const in a string in jsdeclare const javascriptjs const 7b 7d 3d object 5b 5dinitialize a constant javascriptvalue defined as const in es6 can be changedjavascript const 7b var1 2c var1 7d 3djs const examplejavacripts const 7bconst for objects jswriting constants in jsis const a variableconst in javasascriptuse function or const javascriptjavscript constantconst value in object javascriptlet and constshould object be const in javascriptconst 5b 5d 3d function javascriptconst data type in javascriptconstruc object javascriptjavascript create constantconstante in javascriptjs constant with 23const variable in javascriptconst 7b property 7d 3d object jsconst for javascriptchange const in javascripthow to set a pth as a const javascriptlet vs constlet vs var vs const javascriptjavascript defining constantjavascript array constantvar keyword vs let and const javascriptjavascript as constconst and var jsconst x 3d 28 29 7b 7dhow to update const javascriptadd to const javascriptconst in array javascriptjavasciprt const 7b x 7dconst 7b 7d 3d javascriptconst data 3d 5b 7b js 7d 5d 3bjavascript variable and constant declarationdeclare const function javascriptsyntax for var nd constconst 5b 5dset const jsconst numconst with object in jsjs this constantvar vs const jsconst int javascriptjavascript const thisjs const 3d 5ba z 5dlet var constlet or const jsobject const javascriptediting const dict jsvar or constconstant in javascript const meaningconstant meaning in javascriptconst immutable javascriptconst function in javascriptconst javascript forconst change value javascripthow to create const object in node jsconst 7bdata 7dset const array javascriptconst x 3d 7b 7d objectvar or const javascriptlet object constconst of object how to logjavascript const 3d 7bcreate a const array jsconst 7bvalue 7d jscan you set numbers as constants javascriptconst 3d 28 29 3d 3e javascriptconst 3d function javascriptjavascript using constantsconst k 3a any 3d smtn javascriptjs ideas for constant object structurelet 2cvar 2cconst example in jsconst publics 3d 7b 7d 3b in jsname of const variable in javascriptdeclare a constant javascriptjavascript const function syntaxconstant object in javascriptconst object javascriptconst var javascriptconst arrayconst 3d 5b 7b 7d 5d 3bvar vs const in javascriptconst u u 3d 27s 27 javascriptwhat is const in javascriptconstant javascript 5how to make any constant a string in javascriptassign a const in jqueryjavascript const var lejavascript can you set constant to functionjavascript const definitionwhat 27s const in javascriptwhen to use functions or const in javascriptlet var and consthow to use any keyword in constant declaration in jsconst javascriptwhat id date object is declared as const in nodeconst from object aswhat does const 7bvariable 7d mean in javascripthandle constants in javascriptconst data 3a menuitemtype 5b 5dconst key keyword in expressdefine constant in javascriptobject constant javascriptjavascript const arrayconst 7b 7d 3d this 3b javascriptconstant function javascriptjavascript const function examplejavascript assign object const a 3d 7b a 3a 10 7dconst 26var or const var 26array function in constjacascript constcan const object properties changeconst var 3d new var 28 29 3b meaning in javascriotwhen use const and when use let javascriptname some characteristics of a variable declared using c2 a0constconst functioncreate constant variables of different types and uses operators to solve problems javascripthow to make constant in jqueryconst functions jsjs variable constconst or var js old version of constjavascript e constanteangular assigning values to constconst javascript variableconst js 2b 3dopposite of a constant jsobject js constant propertyjavascript const 5bvar 5dhtml constconst 7b 7dlet vs var vs constjs constantconst and thisconst variable can be appendedwehn to use let var constvarible const jsjavascriipt const vs vartypescript const string variablejavascript const structureconst for object jsdeclare function const javascriptjs let and constcopy the state to constant in javascriptconst 24myconst jschange a const type in jswhy const 7b 7dwhy const array javascript modifyconst meaning jsconst javascript writing practicejs var let constjavascript const 7b 7d 3d syntaxjavascript from 10 2c12 const getrandompoints 3d 28upper 2clower 29what does const do in javascriptis const a constantdeclare array const jsconstant number javascriptdefine a constant node jswhy we can change variable in object with constlet var const javascript exampleglobal constant variables name in nodeconst function 3d 28 29 3d 3e 28 29 3d 3e const objectconst use variablewhat is const in javascript