Confusion on using "&&" " || " in onload client script

[Ajay37]

Hi All,

I have 5 state fields on custom table and I have got a requirement like, making the fields read-only for user in 3,4,5 states. I have written onLoad script for this, but I got confused in using the Logical operator. 

Initially I have tried like below:

 if(g_user.hasRole('u_matter_management_user') && (g_form.getValue('state') != '-3' || g_form.getValue('state') != '-2'))

It didn't worked. 

Later I tried like below:

 if(g_user.hasRole('u_matter_management_user') && (g_form.getValue('state') != '-3' && g_form.getValue('state') != '-2'))

It is working. My doubt here is, we are saying either of the states right, so I though to Use OR condition, but didn't work. Could anybody please explain on these operators.

If AND is to be used, I have written a script to make all fields read-only in closed states, using OR condition which is working fine.

function onLoad() {
//Type appropriate comment here, and begin script below
if(!g_user.hasRole("admin") && (g_form.getValue("state")==4 || g_form.getValue("state")==5 || g_form.getValue("state")==6)) {
var fields = g_form.getEditableFields();
for (var x = 0; x < fields.length; x++) {
g_form.setReadOnly(fields[x], true);
}
}
}

Here I have used OR condition only, and it is working fine. But why it is not working in first requirement.

[Onkar Pandav]

Hi,

The line g_form.getValue('state') != '-3' || g_form.getValue('state') != '-2' will check for state should not be -3 or state should not be -2.

The line g_form.getValue('state') != '-3' && g_form.getValue('state') != '-2' will check for state should not be -3 and -2 as well.

[Ajay37]

Thanks for reply Onkar.