揭秘JavaScript中trim函数的巧妙用法！

Username:

Submit

document.getElementById('myForm').addEventListener('submit', function(event) {

event.preventDefault(); // 阻止表单提交

let username = document.getElementById('username').value;

let trimmedUsername = username.trim();

console.log('Original Username:', username);

console.log('Trimmed Username:', trimmedUsername);

// 在这里可以对trimmedUsername进行进一步处理，如验证或发送到服务器

});