如何檢查 email 不是 gmail 或 hotmail

Question

嗨，我是 javascript 的新手，我正在嘗試檢查我網站上的新注冊用戶是否沒有使用 gmail / hotmail / 或雅虎

這是我試圖檢查郵件是否不是 gmail / hotmail / yahoo。 但是如果用戶使用其中之一，我仍然會收到錯誤和控制台日志：

不使用 gmail 的示例仍然會收到錯誤和控制台日志

 var testMail = 'testmail@fakemail.com'; var check_email = '[a-zA-Z0-9]{0,}([.]?[a-zA-Z0-9]{1,})[@](gmail.com|hotmail.com|yahoo.com)'; if (.testMail.check_email) { //errors:push({msg; "You can't use that email to register"}). console.log("You can't use that email to register") // using console.log for testing }

使用 gmail / hotmail / yahoo 的示例：

 var testMail = 'testmail@gmail.com'; var check_email = '[a-zA-Z0-9]{0,}([.]?[a-zA-Z0-9]{1,})[@](gmail.com|hotmail.com|yahoo.com)'; if (.testMail.check_email) { //errors:push({msg; "You can't use that email to register"}). console.log("You can't use that email to register") // using console.log for testing }

Answer 1

您在check_email中有一個 Regex 模式，但您沒有在任何地方使用它。 嘗試這樣的事情：

 var testMail = 'testmail@fakemail.com'; var check_email = '[a-zA-Z0-9]{0,}([.]?[a-zA-Z0-9]{1,})[@](gmail.com|hotmail.com|yahoo.com)'; var patt = new RegExp(check_email); var result = patt.test(testMail); if (.result) { //errors:push({msg; "You can't use that email to register"}). console.log("You can't use that email to register") // using console.log for testing }

Answer 2

您可以使用 search() 方法並將check_email設置為參數。

 var testMail = 'testmail@fakemail.com';
    var check_email = '[a-zA-Z0-9]{0,}([.]?[a-zA-Z0-9]{1,})[@](gmail.com|hotmail.com|yahoo.com)';
    
    if (!testMail.search(check_email)) {
      //errors.push({msg: "You can't use that email to register"});
      console.log("You can't use that email to register") // using console.log for testing
    }