javascript - Use arrays to add up values based on the title or the alt attribute -


calculating form has options , based on client enters determines products load in sidebar. products given quantity directly reflects value of option.

so per product there total price, total duration , total number of dives seen here. 

num1=number(document.getelementbyid('product_quantity_' + productid).value); num2=number(document.getelementbyid('product_price_' + productid).value); nums=num1*num2; document.getelementbyid('product_price_total_' + productid).value = nums;  num1=number(document.getelementbyid('product_quantity_' + productid).value); num2=number(document.getelementbyid('product_duration_' + productid).value); nums=num1*num2; document.getelementbyid('product_duration_total_' + productid).value = nums;  num1=number(document.getelementbyid('product_quantity_' + productid).value); num2=number(document.getelementbyid('product_dives_' + productid).value); nums=num1*num2; document.getelementbyid('product_dives_total_' + productid).value = nums;  num1=number(document.getelementbyid('product_quantity_' + productid).value); num2=number(document.getelementbyid('product_hire_' + productid).value); nums=num1*num2; document.getelementbyid('product_hire_total_' + productid).value = nums;

so need script gives grand total price of of -- 'product_price_total_' + productid).value -- , grand total duration, , third grand total dives etc.. etc...

not sure how few ideas array added fields specific alt tag or title tag.

anyone got ideas.

thanks

how this? (using same $() function Šime vidas above)

var productids = {};  function product_totals(id) {     productids[id] = true; // store id's totals calculated     .... }  function totaltotals() {     var totalpricetotal = 0;     var totaldurationtotal = 0;     var totaldivestotal = 0;     var totalhiretotal = 0;      (var id in productids) {         // multiply 1 make sure it's number         totalpricetotal += $('product_price_total_' + id).value*1;         totaldurationtotal += $('product_duration_total_' + id).value*1;         totaldivestotal += $('product_dives_total_' + id).value*1;         totalhiretotal += $('product_hire_total_' + id).value*1;     } }

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