jQuery multiple running totals

问题:

0I am using jQuery to calculate a running total on multiple textboxes. Just found an awesome response on how to get that working a few days ago, but now I am running into another problem. When using one selector, the total for GetTotal is calculated perfectly. However, when I include the second selector, the totals begin to conflict with one another, and no longer calculate properly. I have been searching for a solution to this for some time now, does anyone have any ideas?

Here is the selector i am currently using:

function GetTotal(txtBox) {
        var total = 0;
        $('input:text').each(function(index, value) {
            total += parseInt($(value).val() || 0);
        });

        $("#chkTotal").html(total);
    }

My view uses these txt boxes

<div class="editor-field">
        @Html.TextBox("Field1", String.Empty, new {InputType = "text", id = "field1", onchange = "GetTotal(this)" })

    </div>


    <div class="editor-field">
        @Html.TextBox("Field2", String.Empty, new {InputType = "text",  id = "field2", onchange = "GetTotal(this)" })

    </div>
    <div>
        <h3>Total Checked</h3>
    </div>

<div id="chkTotal"></div>

Now I am trying to implement another selector which will total two additional editor fields...

function GetTotal1(txtBox) {
        var total1 = 0;
        $('input:text').each(function (index, value) {
            total1 += parseInt($(value).val() || 0);
        });

        $("#disTotal").html(total1);
    }

View:

<div class="editor-field">
        @Html.TextBox("Field3", String.Empty, new {InputType = "text", id = "field3", onchange = "GetTotal1(this)" })

    </div>


    <div class="editor-field">
        @Html.TextBox("Field4", String.Empty, new {InputType = "text", id = "field4", onchange = "GetTotal1(this)" })

    </div>
    <div>
        <h3>Total Distributed</h3>
    </div>
    <div id="disTotal"></div>

回答1:

Use different HTML classes on the two sums, like

<div class="editor-field">
    @Html.TextBox("Field1", String.Empty, new {@class = "total0", InputType = "text", id = "field1", onchange = "GetTotal(this)" })
</div>
<div class="editor-field">
    @Html.TextBox("Field2", String.Empty, new {@class = "total0", InputType = "text",  id = "field2", onchange = "GetTotal(this)" })
</div>
<div>
    <h3>Total Checked</h3>
</div>
<div id="chkTotal"></div>
<div class="editor-field">
    @Html.TextBox("Field3", String.Empty, new {@class = "total1", InputType = "text", id = "field3", onchange = "GetTotal1(this)" })
</div>
<div class="editor-field">
    @Html.TextBox("Field4", String.Empty, new {@class = "total1", InputType = "text", id = "field4", onchange = "GetTotal1(this)" })
</div>
<div>
    <h3>Total Distributed</h3>
</div>
<div id="disTotal"></div>

Javascript:

function GetTotal(txtBox) {
    var total = 0;
    $('input:text.total0').each(function(index, value) {
        total += parseInt($(value).val() || 0);
    });

    $("#chkTotal").html(total);
}

function GetTotal1(txtBox) {
    var total1 = 0;
    $('input:text.total1').each(function (index, value) {
        total1 += parseInt($(value).val() || 0);
    });

    $("#disTotal").html(total1);
}

回答2:

Your each() function runs all input fields no matter if you defined two different functions...

$('input:text').each(...

get ALL 4 input fields in both functions.

One approach is to set a class for each surrounding div ie:

 <div class="editor-field group1">

And then in your function have

 $('.group1 input:text').each(function( ...

An even more useful approach would be to use the function parameter to pass the class:

function GetTotal(group) {
    var total = 0;
    $('.'+group+' input:text').each(function(index, value) {
        total += parseInt($(value).val() || 0);
    });

    $("#chkTotal"+group).html(total);
}

You would need to rename the total divs for each group:

<div id="chkTotalgroup1"></div>

Then change "this" in your onChange handlers to each group you want to summarize. (group1, group2 and so on...)

onchange = "GetTotal1(group1)"