32 lines
684 B
JavaScript
32 lines
684 B
JavaScript
const tracks = ["HTML", "CSS", "JavaScript"];
|
|
|
|
const user = {
|
|
name: "林晨",
|
|
stage: "基础阶段",
|
|
};
|
|
|
|
function sumScores(...scores) {
|
|
// 返回总分
|
|
/*let total = 0
|
|
scores.forEach(item => {
|
|
total = total+item
|
|
})
|
|
return total*/
|
|
return scores.reduce((acc, item) => {
|
|
return acc + item
|
|
}, 0)
|
|
}
|
|
|
|
// 任务：
|
|
// 1. 复制 tracks 并新增 "ES6+"
|
|
// 2. 基于 user 生成一个 stage 为 "现代 JS" 的新对象
|
|
// 3. 调用 sumScores
|
|
// 4. 输出结果到 #output
|
|
const tracks1 = [...tracks, "ES6+"]
|
|
const user1 = {
|
|
...user,
|
|
stage: "现代 JS"
|
|
}
|
|
const sum = sumScores(1, 2, 3, 4)
|
|
const output = document.getElementById("output")
|
|
output.textContent = sum |