这是我的 html 文件:
function showMovies(){
const movies = [
{title: 'a nice movie', year: 2020, rating: 4.5},
{title: 'another nice movie', year: 2021, rating: 4.8},
{title: 'just another movie', year: 2022, rating: 4.2}
];
let html ="";
html = movies.map(function(m) {
return "<li>" + m.title + '-' + m.year + "-" + m.rating + "</li>";
});
html = "<ul>" + html + "</ul>";
document.getElementById('list').innerHTML = html;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body onload="showMovies()">
<h2>List of movies</h2>
<div id="list"></div>
<script src="movies.js"></script>
</body>
</html>
这是地图功能的预期结果吗?我应该链接一些连接/分割函数来去掉多余的逗号吗?
当你这样做时:
html = "<ul>" + html + "</ul>";
html
was 是一个数组,但你将它折叠成一个字符串。在此过程中,JavaScript 将其表示为一组逗号分隔的值。
您可以显式地将数组 join 转换为字符串,而不是隐式地将数组转换为字符串:
html = "<ul>" + html.join("") + "</ul>";