console 命令行工具 X clear
console
<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>手机号码自动格式化</title>
    <style>
        input {
            font-size: 18px;
            padding: 10px;
            width: 250px;
            border: 1px solid #ccc;
            border-radius: 5px;
            text-align: center;
        }
    </style>
</head>
<body>
    <input type="text" id="phoneInput" placeholder="(555) 867-5309" maxlength="14">
    <button id="submitBtn">提交</button>

<script>
    document.getElementById("submitBtn").addEventListener("click", function () {
        let rawInput = document.getElementById("phoneInput").value;
        let phoneNumber = "+1" + rawInput.replace(/\D/g, ""); // 移除非数字并加上区号
        console.log("提交的手机号:", phoneNumber);

        // 示例：提交到 API
        fetch("https://your-api.com/submit", {
            method: "POST",
            headers: { "Content-Type": "application/json" },
            body: JSON.stringify({ phone: phoneNumber })
        })
        .then(response => response.json())
        .then(data => console.log("API 返回:", data))
        .catch(error => console.error("请求错误:", error));
    });
</script>

    <script>
        document.getElementById("phoneInput").addEventListener("input", function (e) {
            let input = e.target.value;
            let numbers = input.replace(/\D/g, ""); // 移除所有非数字字符
            let formattedNumber = "";

            if (numbers.length > 0) {
                formattedNumber = `(${numbers.substring(0, 3)}`;
            }
            if (numbers.length >= 4) {
                formattedNumber += `) ${numbers.substring(3, 6)}`;
            }
            if (numbers.length >= 7) {
                formattedNumber += `-${numbers.substring(6, 10)}`;
            }

            e.target.value = formattedNumber;
        });
    </script>
</body>
</html>