我正在使用jQuery Calculator插件（http://www.pengoworks.com/workshop/jquery/calculation/calculation.plugin.htm）并在计算纸杯蛋糕的成本时偶然发现了一个小问题。
1-12种产品需要19英镑，13-24种产品需要37英镑，25种产品需要1.45英镑，但是无法知道如何更改总和以显示这一点。
有人可以帮忙吗？
我的代码到目前为止......
var bIsFirebugReady = (!!window.console && !!window.console.log);
$(document).ready(
function (){
// update the plug-in version
$("#idPluginVersion").text($.Calculation.version););
// bind the recalc function to the quantity fields
$("input[name^=qty_item_]").bind("keyup", recalc);
// run the calculation function now
recalc();
// automatically update the "#totalSum" field every time
// the values are changes via the keyup event
$("input[name^=sum]").sum("keyup", "#totalSum");
// automatically update the "#totalAvg" field every time
// the values are changes via the keyup event
$("input[name^=avg]").avg({
bind:"keyup"
, selector: "#totalAvg"
// if an invalid character is found, change the background color
, onParseError: function(){
this.css("backgroundColor", "#cc0000")
}
// if the error has been cleared, reset the bgcolor
, onParseClear: function (){
this.css("backgroundColor", "");
}
});
// automatically update the "#minNumber" field every time
// the values are changes via the keyup event
$("input[name^=min]").min("keyup", "#numberMin");
// automatically update the "#minNumber" field every time
// the values are changes via the keyup event
$("input[name^=max]").max("keyup", {
selector: "#numberMax"
, oncalc: function (value, options){
// you can use this to format the value
$(options.selector).val(value);
}
});
// this calculates the sum for some text nodes
$("#idTotalTextSum").click(
function (){
// get the sum of the elements
var sum = $(".textSum").sum();
// update the total
$("#totalTextSum").text("$" + sum.toString());
}
);
// this calculates the average for some text nodes
$("#idTotalTextAvg").click(
function (){
// get the average of the elements
var avg = $(".textAvg").avg();
// update the total
$("#totalTextAvg").text(avg.toString());
}
);
}
);
function recalc(){
$("[id^=total_item]").calc(
// the equation to use for the calculation
if(qty > 24){
"qty * price",
// define the variables used in the equation, these can be a jQuery object
{
qty: $("input[name^=qty_item_]"),
price: $("[id^=price_item_]"),
},
}else{
"qty = fee",
// define the variables used in the equation, these can be a jQuery object
{
qty: $("input[name^=qty_item_]"),
fee: ($("input[name^=qty_item_]").val() < 13) ? 19 : 37 ,
},
}
// define the formatting callback, the results of the calculation are passed to this function
function (s){
// return the number as a dollar amount
return "£" + s.toFixed(2);
},
// define the finish callback, this runs after the calculation has been complete
function ($this){
// sum the total of the $("[id^=total_item]") selector
var sum = $this.sum();
$("#grandTotal").text(
// round the results to 2 digits
"£" + sum.toFixed(2)
);
}
);
}
我甚至试过......
function recalc(){
// define the variables used in the equation, these can be a jQuery object
var qty = $("input[name^=qty_item_]");
var price = $("[id^=price_item_]");
var fee = ($("input[name^=qty_item_]").val() < 13) ? 19 : 37;
$("[id^=total_item]").calc(
// the equation to use for the calculation
if(qty > 24){
"qty * price",
}else{
"qty = fee",
}