javaScript Switch语句和break/continue

最新推荐文章于 2024-01-19 14:03:35 发布

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最新推荐文章于 2024-01-19 14:03:35 发布

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switch

var bmConfig = {}
var enviroment = 'dev';
switch (enviroment) {
    case 'dev':
        bmConfig = {
            authorUrl: "url1",
        }
        break;
    case 'prev':
        bmConfig = {
            authorUrl: 'url2',
        }
        break;
    case 'product':
        bmConfig = {
            authorUrl: "url3",
        }
        break;
}
console.log(bmConfig.authorUrl);

export { bmConfig }

<body>
    <b id="time"></b>
</body>
<script>
    var d = new Date().getDay()
    let date;
    switch (d) {
        case 0:
            date = "今天是星期日"
            break;
        case 1:
            date = "今天是星期一"
            break;
        case 2:
            date = "今天是星期二"
            break;
        case 3:
            date = "今天是星期三"
            break;
        case 4:
            date = "今天是星期四"
            break;
        case 5:
            date = "今天是星期五"
            break;
        case 6:
            date = "今天是星期六"
            break;

        default:
            break;
    }
    document.getElementById("time").innerHTML = date
</script>

break和continue

break

var x = "",
    i = 0;
for (i = 0; i < 10; i++) {
    if (i == 3) {
        break;
    }
    x = x + "该数字为 " + i
}
console.log(x);
//该数字为 0该数字为 1该数字为 2

continue

var x = "",
    i = 0;
for (i = 0; i < 10; i++) {
    if (i == 3) {
        continue;
    }
    x = x + "该数字为 " + i
}
console.log(x);
//该数字为 0该数字为 1该数字为 2该数字为 4该数字为 5该数字为 6该数字为 7该数字为 8该数字为 9