JavaScript Online quote scipt
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Thread: Online quote scipt

  1. #1
    Join Date
    Nov 2013
    Posts
    3

    Online quote scipt

    I am trying to build or find an on-line instant quote calculator

    the formula I am trying to calculate is

    49 for the first 35 items

    0.85 each item thereafter

    user inputs total amount of items eg 400 items

    400 items - 35 = 365

    365 * 0.85 = 310.25

    310.25 + 49 = 359.25

    Total Price 359.25

    Then the total price 359.25 / 400 to give the price per item 0.89 (to two decimal places)

    I've found several on-line calculator builders but nothing that can handle this sort of variables.

    This script is the closest I have got but my maths is terrible and I cant seem to edit the code correctly http://www.dynamicdrive.com/forums/s...ote-calculator

  2. #2
    Join Date
    Nov 2013
    Posts
    3

    Re: Online quote scipt

    just for the record.. I am here to learn.. please just push me in the right direction, not asking for the solution here.. (just experienced abuse on stackoverflow lol)

    everyones thinks it... noobs! who'd have em'
    Last edited by MBCUK; November 25th, 2013 at 01:45 PM.

  3. #3
    Join Date
    Nov 2013
    Posts
    3

    Re: Online quote scipt

    I have this as a starting point

    Math.round(400*(49+Math.max(count-35;0)*0.85)/count)/400

  4. #4
    PeejAvery's Avatar
    PeejAvery is offline Super Moderator Power Poster
    Join Date
    May 2002
    Posts
    10,840

    Re: Online quote scipt

    You already have the math completely done in the first post. All you have to do is get the input now.

    Start with a simple prompt window.
    http://www.w3schools.com/jsref/met_win_prompt.asp

    Now get the return and do the math.
    If the post was helpful...Rate it! Remember to use [code] or [php] tags.

  5. #5
    Join Date
    Jun 2009
    Posts
    86

    Re: Online quote scipt

    There's no harm in breaking the problem into simple lines of code, not least so it makes it easier for someone else to manage.
    Code:
    var minimum = 35,
        output = 0,
        input  = prompt("How many items?");
    
    if ( input<=minimum ) {
        output = 49;   // first 35 items are minimum 49
    }
    else {
        output  = input - minimum;
        output  = output * 0.85;  // 85p per additional item above minimum order
        output += 49;
    }
    alert("Total = "+output.toFixed(2)+", Per Item = "+(output/input).toFixed(2));
    Did you deliberately want to round down though because the per item in your example is actually 0.898125 which to 2 decimal places should be 0.90?

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