Help with JavaScript in a Form

i creating form in acrobat needs little javascript, don't know javascript appreciated.

in form there separate price fields , field automatically fills in average price of them. problem not 4 price fields going filled out in every instance ruins average. need script average price fields have value.

i thinking create invisible field state

if (price) > 0 set value 1 (what in javascript?)

i each of 4 price fields in invisible field count them , use sum divide total cost average.

thanks in advance help!

you don't need use hidden fields. use following custom calculation script of average price field:

 
// initialize variables 
var cur_val; // variable hold current field value 
var sum = 0; // sum of field values 
var num = 0; // number of fields values 
 
// loop through price fields 
for (var = 0; < 4; i++) { 
 
    // field value 
    curr_val = getfield("price" + (i + 1)).valueasstring; 
 
    // if field not empty, add sum , increment counter 
    if (curr_val != "") { 
        sum += +curr_val; // add current value sum 
        num++; // increment counter 
    } 
} 
 
// if there @ least 1 field value 
// set field value equal average 
if (num) event.value = sum/num; 
 
// otherwise, blank field 
else event.value = ""; 
 

this code assumes field names "price1", "price2"..."price4", fields numeric, , used acrobat create fields, opposed livecycle designer. note if field has value of zero, counted field value.

george

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