Need help with a javascript

Forum|Forum|6 years ago
March 11, 2019
5 replies
1585 views

I want to add $3.00 to a field if a checkbox is checked.

If the box is not checked than the original amount entered is not changed.

EFS_FEE is the checkbox name

LUMPER_FEE is the textbox with a value - which could potentially be "0" or any number.

I've tried this and with no luck:

var Lumper = this.getField("LUMPER_FEE")
var Fee = this.getField("EFS_FEE");
if fee.value!="Off"
var Fee = 3
else
var Fee = 0
event.value = Lumper + Fee

This topic has been closed for replies.

Correct answer try67

That's a bit tricky to implement, but try this code as the MouseUp script of the check-box field:

var Lumper = this.getField("LUMPER_FEE");
if (event.target.value=="Yes") {
    Lumper.value = Number(Lumper.value)+3;
} else Lumper.value = Number(Lumper.value)-3;

K

K3JAE_JohnAuthor

Known Participant

Sorry, When ticking the box no change to the textbox amount occurs.

Current value in the textbox is $120.00

My intended goal (as I am sure you understand) is when the checkbox is ticked the value in the textbox should change to $123.00

try67

Community Expert

I understood the requirement.

Press Ctrl+J and check if there are any error messages in the Console.

K

K3JAE_JohnAuthor

Known Participant

The following is present:

TypeError: this.getField(...) is null
1:Field:Mouse Up
TypeError: this.getField(...) is null
1:Field:Mouse Up

K

K3JAE_JohnAuthor

Known Participant

There is no calculation for the LUMPER_FEE. It is a hand input value by my drivers. I need to add $3.00 only if a specific case exists.

try67

Correct answer

Community Expert

That's a bit tricky to implement, but try this code as the MouseUp script of the check-box field:

var Lumper = this.getField("LUMPER_FEE");
if (event.target.value=="Yes") {
    Lumper.value = Number(Lumper.value)+3;
} else Lumper.value = Number(Lumper.value)-3;

K

K3JAE_JohnAuthor

Known Participant

That does not gonna work. Tried and I'm unclear on 1 thing:

1: Why are you calling to subtract 3 if the box is not checked?

logistics227043683

Known Participant

I believe you only need to declare variables only once, so take away the "var" in front of, "Fee" and you only need to declare it a variable once. Also, make sure you are using open/closed brackets correctly, https://www.w3schools.com/jsref/jsref_if.asp like so: if (Fee.value != "Off"){ Fee = 3; } else { Fee = 0; } Also, make sure that, "Fee" is capitalised since that is how you first declared it, otherwise the script will not work, and put a ';' at the end of, 'var Lumper = this.getField("LUMPER_FEE")'