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Thread: how would I modify this script to add window.alert?

  1. #1
    Join Date
    Jul 2011
    Posts
    1

    Question how would I modify this script to add window.alert?

    Currently when check boxes are selected the total appears in the text field and the choices are listed in the box next to it. I need it to do something different.

    I need for the text fields to go away and be replaced with a "total" button that pressed opens a new alert window informing the user what the total is.

    Can anyone help?

    Code:
    <script type="text/javascript">
    //<![CDATA[
    function calculate(f)
    {
    var nums = f.num;
    var ntext = f.numtext;
    var nitem = f.numitem;
    var result = 0;
    var items = '';
    for(var i=0;i<nums.length;i++)
    {
    if(nums[i].checked)
    {
    result+=parseFloat(ntext[i].value);
    items+=nitem[i].value+'\n';
    }
    }
    f.answer.value=result;
    
    f.allitems.value=items;
    }
    //]]>
    </script>
    </head>
    <body>
    <div id="wrap">
    <div id="header">
    <h1><img src="Images/logo.png" alt="Logo" width="300" height="50" /></h1>
    <ul id="nav">
    <li><a title="About" href="index.html">About</a></li>
    <li><a class="active" title="Menu" href="menu.html">Menu</a></li>
    <li><a title="Contact" href="contact.html">Contact</a>
    </ul>
    </div>
    <div id="instructions">
    <form name="myform">
    Build your own family meal<br>
    <div class="box1">
    <input type="checkbox" name="num" onClick="calculate(this.form)">
    <input type="hidden" name="numtext" value="24.00" onChange="calculate(this.form)">
    <input type="hidden" name="numitem" value="Chicken Enchiladas" onChange="calculate(this.form)">
    <div class="box2">Chicken Enchiladas $24.00</div>
    </div>
    <br>
    <div class="box1">
    <input type="checkbox" name="num" onClick="calculate(this.form)">
    <input type="hidden" name="numtext" value="15.00" onChange="calculate(this.form)">
    <input type="hidden" name="numitem" value="Rice and Beans" onChange="calculate(this.form)">
    <div class="box2">Rice and Beans $15.00</div>
    </div><br>
    <div class="box1">
    <input type="checkbox" name="num" onClick="calculate(this.form)">
    <input type="hidden" name="numtext" value="6.00" onChange="calculate(this.form)">
    <input type="hidden" name="numitem" value="Chips and Salsa" onChange="calculate(this.form)">
    <div class="box2">Chips and Salsa $6.00</div>
    </div><br>
    <div class="box1">
    Total <input type="text" name="answer" size="5"><textarea name="allitems" rows="5"></textarea>
    </div>
    </form>
    </div>

  2. #2
    Join Date
    May 2011
    Posts
    194

    why alert?

    Hi,

    Input-tag has VALUE

    <INPUT ID="inputForResult" TYPE="TEXT"> ...
    <INPUT ID="inputForItems" TYPE="TEXT"> ...

    <script>

    function calculate(f)
    {

    .....

    document.getElementById("inputForResult").value=result; // .toString();

    document.getElementById("inputForItems").value=items; // .toString();

    }

    // why alert ?

    </script>

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