7.37. Bootstrap5 form validation

发布时间： 2025-10-25 13:35:28 UTC
Page Views: 9 views
We can use different validation classes to set up the validation function of the form.
.was-validated or .needs-validation add to
element, the   input   input field will have a green (valid) or red (invalid) border effect to indicate whether the form requires input.   .valid-feedback   or   .invalid-feedback   class is used to tell the user what information is missing or what needs to be done before submitting the form.
 7.37.1.  Example  ¶ 
Use   .was-validated   class displays what the form needs to fill in beforeit is submitted:
  Username:  Verification successful！
 Please enter your username!
 
  Password:  Verification successful!
 Please enter password!
 
    consent agreement Verification successful!
 Agree to the agreement before submitting.
  
   
 7.37.2.  Example  ¶ 
Use   .needs-validation   which validates the missing content after the form is submitted You need to add some JavaScript code here to make the codework:
  Username:  Verification successful！
 enter one user name！
 
  Password:  Verification successful！
 Please enter password！
 
    consent agreement Verification successful！
 Agree to the agreement before submitting。
  
  
  
文章链接 ： 7.37. Bootstrap5 form validation 
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