[ISDP] 20170420 Form validation

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[Exercise] Essay (Open question) - asked in 2016-2 CSIEB0270 - Internet System Design and Practice by (18k points)
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<!DOCTYPE html>

<html>
** * * ***
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function validateForm() {
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** **** ** **** ******* (x == ** * * ** {
** * ** * ** ** ** * * * * ** * * * ******* ** ** must be filled out");
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}
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Name: <input ** **** * * * ** ** **** *** ** **** *

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