javascript
let str = "12345.00";
str = str.substring(0, str.length - 1);
console.log(str);javascript
let str = "12345.00";
str = str.substring(0, str.length - 1);
console.log(str);${} js
let x = 5;
console.log("hello world " + x + " times");
console.log(`hello world ${x} times`);javascaript
Javascript é uma linguagem capaz de desenvolver desde Páginas web até jogos... javascript
/* Spread syntax ( ex. ...arrayName) allows an iterable such as an array expression or string
to be expanded in places where zero or more arguments (for function calls)
elements (for array literals) are expected, or an object expression to be
expanded in places where zero or more key-value pairs (for object literals)
are expected. */
//example
function sum(x, y, z) {
return x + y + z;
}javascript
test // a java object
// create a new property
test.newProperty = "new Property"
// create a new method
test.newMethod = function () { return "new Method"; }
Object.defineProperty(test, 'defProperty', {
value: "define Property"
});
console.log(test.defProperty);
// define Property
console.log(test.newMethod());
// new Method
console.log(test.newProperty);
// new Property!! javascript
!! !! it's short way to cast a variable to be a boolean (true or false) valueCopyright © 2021 Codeinu
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