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Field validation

I have nearly finished creating some landing pages with simple contact forms, which when submitted open up a lightbox window.

This is all working fine, however I am unable to add in simple field validation (to ensure all fields are filled in prior to submitting). If any required fields are not filled in we need a message to show up to say 'You have not filled in all fields, please check and press submit when done'.

If anyone can help with this and get it sorted within the next 4 hours that would be great!

Kĩ năng: Javascript, PHP

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Về Bên Thuê:
( 7 nhận xét ) Bagshot, United Kingdom

ID dự án: #1079123

7 freelancer đang chào giá trung bình £21 cho công việc này

zeee

Please see PMB.

£20 GBP trong 1 ngày
(170 Nhận xét)
7.8
denisCh

Please check PM

£20 GBP trong 1 ngày
(76 Nhận xét)
7.5
jDevAndDesign

please check your pmb

£25 GBP trong 1 ngày
(166 Nhận xét)
6.9
expertspk

Hi, Let's start to finish it now. Thank you

£20 GBP trong 0 ngày
(116 Nhận xét)
6.7
LloydesignStudio

Hi Sir please see pmb. thanks. Lloyd

£20 GBP trong 1 ngày
(184 Nhận xét)
6.4
RedhopIT

Hi,Please check PM

£20 GBP trong 0 ngày
(67 Nhận xét)
6.1
phpthebest

Hi , check Pm

£20 GBP trong 0 ngày
(68 Nhận xét)
6.0