// declare three arraysletstudent1 = ['Jack',24];letstudent2 = ['Sara',23];letstudent3 = ['Peter',24]; // create multidimensional array// using student1, student2, and student3letstudentsData = [student1, student2, student3]; // print the multidimensional arrayconsole.log(studentsDat...
c = undefined; var [a, b = 0, c = 0] = [1, 2]; // same: var a = 1, b = 2, c = 0; // declare and set default value var [a, b, [c, d], e] = [1, 2, [3, 4], 5]; // same: var a = 1, b = 2, c = 3, d = 4, e = 5 // nested array destru...
在非严格模式下,此情况下delete简单地求值为false: // In strict mode, all these deletions throw TypeError instead of returning falsedeleteObject.prototype// => false: property is non-configurablevarx =1;// Declare a global variabledeleteglobalThis.x// => false: can't delete this propertyfunction...
varname=newValue Examplevarname = "Michael"//declare variable and give it value of "Michael"name = "Samuel"//change value of name to "Samuel" 翻译自https://www.codecademy.com/articles/glossary-javascript
const typedArray = new Int8Array(5); f64a[0] = 1; f64a[1] = 2; // Int8Array(5) [1, 2, 0, 0, 0] Alternatively, you can explicitly declare your buffer separately from your view: const buffer = new ArrayBuffer(8); // 8-byte ArrayBuffer. const typedArray = new Int8Array(...
So one of the best tips I can give you for writing modern and safe Javascript is: Please, do not usevarto declare your variables. ES6 has introduced theletandconstkeywords, which scope your variables only to the current block. This simple tip will help your code tremendously, and help you...
Const is used to declare variables with values that do not get reassigned. Reassigning a const value throws an error. Additionally, both const and let honor all block scope (i.e. { block scope }), unlike var which only honors function block scope (i.e. function myFunction(){ block ...
Declare once, then initialize and reassign values as often as needed. Thus, in complex functions that have two or more outer for loops, you should declare the counter variable at the top of the function, and simply initialize the value at the start of each loop. As for selecting the ...
// Declare a new constant which is a string 'constructor' const c = "constructor"; // c is a string c; // -> 'constructor' // Getting a constructor of string c[c]; // -> [Function: String] // Getting a constructor of constructor c[c][c]; // -> [Function: Function] //...
A post-processing render function would for example declare to produce the composite-color output: produces: "composite-color" sunLight Property sunLight SunLight The lighting used by SceneView to render the current frame. view Property view SceneView The SceneView linked to this render node...