[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>
** ** * * *
*** ** * **

function validateForm() {
**** ** ** * *** **** * x = * ** ***** ** ** ** ** * ** * ** *
*** * *** * ****** *** ** (x == * ******* ** {
* * ** * ** * * *** **** ** *** ***** * ***** *** * must be filled out");
* *** ** * ****** * *** * * * **** * false;
* *** * * *** ****

}
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<form *** ***** * ** * ** ***** * *** ** **** * *
* ** ** * ** * ** * * * ** * ** *** * * **

Name: <input *** **** * ** * * ** ***** *********

<input ***** * * ** ** * ** * * * **
**** * *****


** * * *
* * *
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