jQuery的 - 修剪領導和「焦點了」關於尾隨空格

Question

想象我有很多文本字段的HTML表單

<input id="name" type="text" required> 
<input id="surname" type="text" required> 
<input id="address" type="text" required> 

如何修剪引導和焦點尾隨上的所有文本域空間」出來「，即，當用戶離開填寫文本字段？

Answer 1

一個簡單的解決方案是使用jQuery函數$.trim

//removes leading and trailing spaces on every text field "on focus out" 
$(":text").each(function(index) { 
    $(this).focusout(function() { 
     var text = $(this).val();  
     text = $.trim(text); 
     $(this).val(text); 
    }); 
}); 

====================

下面是一個簡單的代碼

//removes leading and trailing spaces on every text field "on focus out" 
 
$(":text").each(function(index) { 
 
    $(this).focusout(function() { 
 
     var text = $(this).val();  
 
     text = $.trim(text); 
 
     $(this).val(text); 
 
    }); 
 
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 
 
First Name<br> 
 
<input id="name" type="text" required><br> 
 
Surname<br> 
 
<input id="surname" type="text" required><br> 
 
Address<br> 
 
<input id="address" type="text" required><br>