JavaScript里的alert无法弹窗

问题遇到的现象和发生背景

写dynamic web的时候提交表格，我本来设置成功提交会有alert，但是却没有

问题相关代码，请勿粘贴截图

 <div class="container">
        <div class="row">
            <div class="col-lg-8  offset-lg-2 col-md-10">
                <p>Do you want to contact me? Fill out the form below to send me a message, and I will respond ASAP!</p>
                    <div id="error_message"></div>
                        <form onsubmit="return validate();">
                            <div>
                                <div>
                                    <label style="color:#fff">Name</label>
                                    <input type="text" class="form-control" placeholder="Name" id="name">           
                                </div>
                            </div>
                            <div>
                                <div>
                                    <label style="color:#fff">Email Address</label>
                                    <input type="text" class="form-control" placeholder="Email Address" id="email">
                                </div>
                            </div>
                            <div>
                                <div>
                                    <label style="color:#fff">Phone Number</label>
                                    <input type="text" class="form-control" placeholder="Phone Number" id="phone" >                                    
                                </div>
                            </div>
                            <div>
                                <div>
                                    <label style="color:#fff">Profession</label>
                                    <input type="text" class="form-control" placeholder="Profession" id="profession" >
                
                                </div>
                            </div>                   
                            <div>
                                <div>
                                    <label style="color:#fff">Message</label>
                                    <textarea class="form-control" placeholder="Message" id="message" ></textarea>
                           
                                </div>
                            </div>
                            <br>                     
                            <button class="btn btn-secondary float-right" type="submit" id="submit">Send</button>
                        </form>
            </div>
        </div>
    </div>

 function validate(){
let name = document.getElementById("name").value;
let email = document.getElementById("email").value;
let phone = document.getElementById("phone").value;
let profession = document.getElementById("profession").value;
let message = document.getElementById("message").value;

let error_message = document.getElementById("error_message");

error_message.style.padding = "10px";

let text;
if(name.length < 1){
    
    text = "Please enter valid name.";
    error_message.innerHTML = text;
    return false;
}
if(email.length < 10){
    
    text = "Please enter valid email address.";
    error_message.innerHTML = text;
    return false;
}
if(phone.length < 1){
    
    text = "Please enter valid phone number.";
    error_message.innerHTML = text;
    return false;
}
if(profession.length < 1){
    
    text = "Please enter valid profession.";
    error_message.innerHTML = text;
    return false;
}

if(message.length < 10){
    
    text = "Please enter more than 10 characters.";
    error_message.innerHTML = text;
    return false;
}

if(isNaN(phone)||phone.length < 1){
    text = "Please enter valid phone number.";
    error_message.innerHTML = text;
    return false;
}

if(emailAddress.indexOf("@") == -1 || emailAddress.length < 10){
    text = "Please enter valid email";
    error_message.innerHTML = text;
    return false;
}

alert("your form is submitted");
return true;

}

运行结果及报错内容

结果就是没有弹出“your form is submitted"

我的解答思路和尝试过的方法

我想要达到的结果

弹出alert：”your form is submitted"

改完代码后，要清空缓存，然后执行。

emailAddress这里报错了
emailAddress改为email

说明代码没有执行到alert哪里，你可以检查一下是不是前面那些逻辑就已经return掉了

走断点