Javascript validating forms php

22-Apr-2017 02:03

I know there are ways to do this with radio buttons and checkboxes, but can it be done with dropdowns as well? Could you please give me an example of how to check them one at a time and how to concatonate the errors if they exist? The name of my form is "my Form"I have not been able to find code anywhere that incorporates the 2 (That is, empty or alpha). might help: Rather than using alert()s for each field, just concatenate the error messages together into a string (separated by e.g.

The form is large so I didn't want to paste all here, but the snap shot of the items I'm referring to are: Is it possible to make the the text field with name=googlekey required if some selects Google Search in drop down..not required if they make some other selection? The name of the function is validate Form() for a solution to trapping the space being entered. I get my form to work with the validation, but everyone who first submits the form gets this error: "403 No variable substitutions in template"When you reload the page the form sends perfectly. "\n"), then display the final string in an alert box if valid == false. It has three fields which I want to validate but in testing it the first incident of validation causes the alert to pop up but then when I click OK on the alert it submits the form anyway without letting me complete the field and continue to the other fields.

Our example is very simple as it only checks one field.

Let's expand this example with a more complex function that checks lots of form fields.

The form will include one text field called "Your Name", and a button.

This can be a bit confusing for the user, especially if they've missed out more than one field, as they will get lots of alert boxes appearing and they might forget which fields they need to fill in!

I have a registraion form setup with javascript validation in place, but there is one place I'm having trouble.

I have a dropdown selection list, and based on the selection, there are text fields that are hidden or displayed for more info.

Thanks, David[Edited by catron on 16-Feb-11 ] im having trouble with my student registration form.you choose the subjects BSIT, BSMATH, BSED, BEED.year level will be limited until 4 year only while if course is BSCE, BSGE, BSArch it will limit until 5 year.. [code]if ( document.contact_form.contact_name.value == "" ) [code][]=space In your example if one enters [] [] [] it does not trap it. It can be found at; Matt, I find your site very helpful. Validation is working when I test the forms but I am getting emails with 1 or -1 in fields (instead of a valid phone or email, etc.) AND I am getting 20, 40, 80 at one time.

I am an ms access guy and very new to javascript, I am trying an web application with php & mysql. Tablename : Table1Feilds : Name, Class, Checkbox Book1, Checkbox Book2 Example Data:- Name: gary Class: 1A jane 1A sree 1B rita 1B jai 1BValidation : Each class can only select not more than 2 of Book1 and 2 of Book2Please give me the code . I have tried to enter a 1 or -1 and it gives me the appropriate error message so I am not sure how I am getting these emails.

This can be a bit confusing for the user, especially if they've missed out more than one field, as they will get lots of alert boxes appearing and they might forget which fields they need to fill in!

I have a registraion form setup with javascript validation in place, but there is one place I'm having trouble.

I have a dropdown selection list, and based on the selection, there are text fields that are hidden or displayed for more info.

Thanks, David[Edited by catron on 16-Feb-11 ] im having trouble with my student registration form.you choose the subjects BSIT, BSMATH, BSED, BEED.year level will be limited until 4 year only while if course is BSCE, BSGE, BSArch it will limit until 5 year.. [code]if ( document.contact_form.contact_name.value == "" ) [code][]=space In your example if one enters [] [] [] it does not trap it. It can be found at; Matt, I find your site very helpful. Validation is working when I test the forms but I am getting emails with 1 or -1 in fields (instead of a valid phone or email, etc.) AND I am getting 20, 40, 80 at one time.

I am an ms access guy and very new to javascript, I am trying an web application with php & mysql. Tablename : Table1Feilds : Name, Class, Checkbox Book1, Checkbox Book2 Example Data:- Name: gary Class: 1A jane 1A sree 1B rita 1B jai 1BValidation : Each class can only select not more than 2 of Book1 and 2 of Book2Please give me the code . I have tried to enter a 1 or -1 and it gives me the appropriate error message so I am not sure how I am getting these emails.

Form validation is the process of checking that a form has been filled in correctly before it is processed.