Struggling with nested if statement

Question

I need to create an if then statement ot check multiple variables.

I have a 100yr floodplain (100yr) A (500yr) a (HAG) a (LAG) and a (Zone)

I need to calculate min FF if Zone = x-shaded min ff = HAG + 1 If LAG is below 500 yr & above 100 yr: Min FF must be at least = to 500 yr
If LAG is below 500 yr & 100 yr BFE: Min FF must be at least 2’ above 500

I started by creating varialbe for LAG HAG 100yr and 500yr but not sure how to check the zone and where to go from there.

var A = this.getField ("500yr").value;
var B = this.getField ("LAG").value;
var C = this.getField ("HAG").value;
Var D = this.getField ("100yr").value;
var E = C + 1;
if(B > A)

Not even sure if I am on the right track with this any help is appreciated.

Thom Parker · Accepted Answer

Here is what I have now,

// Get the field values
var Z = this.getField ("Zone").valueAsString; // Value as a string
var A = this.getField ("500yr").value; // Value as a number
var B = this.getField ("LAG").value; // Value as a number
var C = this.getField ("HAG").value; // Value as a number
var D = this.getField ("100yr").value; // Value as a number

if ((Z == "X-SHADED" || Z == "AE" || Z == "X-SHADED/AE") && B < A && B < D)
event.value = (A + 2);

else if ((Z == "X-SHADED" || Z == "AE") && B > D && B < A)
event.value = (A);

else if (Z == "X")
event.value = (C + 1);

So far it appears to be working but I haven't tested it with all the necessary values yet. Thank you for helping me get this far

Here's how the code is written with indents and brackets.

The brackest are only necessary when there is more than one line in the "if" block. But I've shown them here for completeness.

I've also added extra parenthese around some of the comparison opertators to enforce the grouping/order of operations. This is very helpful when operator precedence is not obvious.

var Z = this.getField ("Zone").valueAsString; // Value as a string
var A = this.getField ("500yr").value; // Value as a number
var B = this.getField ("LAG").value; // Value as a number
var C = this.getField ("HAG").value; // Value as a number
var D = this.getField ("100yr").value; // Value as a number

if (((Z == "X-SHADED") || (Z == "AE") || (Z == "X-SHADED/AE")) && (B < A) && (B < D))
{
      event.value = (A + 2);
}
else if (((Z == "X-SHADED") || (Z == "AE")) && (B > D) && (B < A))
{
      event.value = (A);
}
else if (Z == "X")
{
      event.value = (C + 1);
}

try67 · Answer

So this is a validation script?What you need is not nested if-statements, necessarily, but to use logical operators, such as AND (&&) and OR (||) in your if-conditions.

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