【JavaScript速成之路】一文带你初识JavaScript
在这个快速教程中,我们将介绍JavaScript的基本语法和概念,帮助你开始学习这个强大的编程语言。
- 输出到控制台:
console.log('Hello, World!');
- 变量声明和赋值:
let myVariable = 'Hello, World!';
console.log(myVariable);
- 基本数据类型:
let number = 123;
let string = 'Hello, World!';
let boolean = true;
console.log(number);
console.log(string);
console.log(boolean);
- 运算符:
let sum = 10 + 5;
let difference = 10 - 5;
let product = 10 * 5;
let quotient = 10 / 5;
console.log(sum);
console.log(difference);
console.log(product);
console.log(quotient);
- 条件语句:
let age = 15;
if (age >= 18) {
console.log('You are old enough to vote!');
} else {
console.log('You are too young to vote.');
}
- 函数定义:
function greet(name) {
console.log('Hello, ' + name + '!');
}
greet('World');
- 循环:
for (let i = 0; i < 5; i++) {
console.log('Iteration ' + i);
}
这些代码片段展示了JavaScript的基本特性,是学习这门语言的好起点。通过实践和应用这些概念,你将能够编写更复杂的JavaScript程序。
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