[英]Calculations between input boxes
我正在編寫一個腳本,我需要在其中獲得兩次計算的總和並確定總報價。 問題是在將它們加在一起時我無法讓它們工作。 請記住,我是新手,代碼可能沒有完全優化,但我相信您會明白的。 對代碼的任何改進都非常受歡迎。
<div>
<fieldset>
<legend>Printing</legend>
Number of color pages:<input type="text" id="color" placeholder="Color Pages" onchange="printing();" onchange = "binding();" />
<input type="text" id="colorprice" readonly="readonly" /><br />
Number of black and white pages:<input type="text" id="black" placeholder="Black and White Pages" onchange="printing();" onchange = "binding();" />
<input type="text" id="blackprice" readonly="readyonly" /><br />
Total Pages:<input type="text" id="pages_total" readonly="readonly" /> <input type="text" id="sum_pages" readonly="readonly" onchange = "suming();"/>
</fieldset>
</div>
<div>
<fieldset>
<legend>Binding</legend>
Number of Hardbooks: <input type="text" id="books" placeholder="Number of Hardbooks" onchange="binding();" />
<input type="text" id="books_price" readonly="readonly" /><br />
Number of Softbacks: <input type="text" id="softback" placeholder="Number of Softbacks" onchange="binding();" />
<input type="text" id="soft_price" readonly="readonly" /><br />
Total Bindings: <input type="text" id="total_bindings" readonly="readonly" /><input type "text" id="total_price" readonly="readonly" />
</fieldset>
</div>
<p>Final quote:<input type="text" readonly="readonly" id="quote" /></p>
function printing() {
var blackPrice;
var colorPrice;
var printBlack = new Array(0.10, 0.08, 0.06, 0.05);
var printColor = new Array(0.40, 0.35, 0.30, 0.25);
var colorPages = parseInt(document.getElementById("color").value);
var blackPages = parseInt(document.getElementById("black").value);
if (colorPages < 11) {
colorPrice = colorPages * printColor[0];
}
else if (colorPages >= 11 && colorPages < 51){
colorPrice = colorPages * printColor[1];
}
else if (colorPages >= 51 && colorPages < 101){
colorPrice = colorPages * printColor[2];
}
else {
colorPrice = colorPages * printColor[3];
}
if (blackPages < 11) {
blackPrice = blackPages * printBlack[0];
}
else if (blackPages >= 11 && colorPages < 51){
blackPrice = blackPages * printBlack[1];
}
else if (blackPages >= 51 && colorPages < 101){
blackPrice = blackPages * printBlack[2];
}
else {
blackPrice = blackPages * printBlack[3];
}
var pagesTotal = colorPages + blackPages;
var printSum = blackPrice + colorPrice;
document.getElementById("colorprice").value = "$" + colorPrice.toFixed(2);
document.getElementById("blackprice").value = "$" + blackPrice.toFixed(2);
document.getElementById("sum_pages").value = "$" + printSum.toFixed(2);
document.getElementById("pages_total").value = pagesTotal;
return printSum;
}
function binding(){
var softbackPrice;
var hardbookPrice;
var hardBooks = new Array(37.50, 23.50);
var softBacks = new Array(3.75, 4.00, 4.25, 4.50, 4.75, 5.00, 5.25);
var noBooks = parseInt(document.getElementById("books").value);
var noSoftBacks = parseInt(document.getElementById("softback").value);
var colorPages = parseInt(document.getElementById("color").value);
var blackPages = parseInt(document.getElementById("black").value);
var totalPages = colorPages + blackPages;
if (noBooks == 1) {
hardbookPrice = hardBooks[0];
}
else {
hardbookPrice = (hardBooks[1] * (noBooks - 1)) + hardBooks[0];
}
if (totalPages <= 50) {
softbackPrice = softBacks[0] * noSoftBacks;
}
else if (totalPages > 50 && totalPages <= 100) {
softbackPrice = softBacks[1] * noSoftBacks;
}
else if (totalPages > 100 && totalPages <= 150) {
softbackPrice = softBacks[1] * noSoftBacks;
}
else if (totalPages > 150 && totalPages <=200) {
softbackPrice = softBacks[2] * noSoftBacks;
}
else if (totalPages > 200 && totalPages <= 250) {
softbackPrice = softBacks[3] * noSoftBacks;
}
else if (totalPages > 250 && totalPages <= 300) {
softbackPrice = softBacks[4] * noSoftBacks;
}
else if (totalPages > 300 && totalPages <= 350) {
softbackPrice = softBacks[5] * noSoftBacks;
}
else {
softbackPrice = softBacks[6] * noSoftBacks;
}
var totalPrice = softbackPrice + hardbookPrice;
var bindingsTotal = noSoftBacks + noBooks;
document.getElementById("books_price").value = "$" + hardbookPrice.toFixed(2);
document.getElementById("soft_price").value = "$" + softbackPrice.toFixed(2);
document.getElementById("total_bindings").value = bindingsTotal;
document.getElementById("total_price").value = "$" + totalPrice.toFixed(2);
return totalPrice;
}
function totalSum() {
var totalPrinting = printing();
var totalBinding = binding();
var subtotal = totalPrinting + totalBinding;
document.getElementIdBy("quote").value = subtotal;
}
它對我有用(大部分): http://jsfiddle.net/UHnRL/
第一個onchange
計算存在問題,因為在執行parseInt
之后,其他頁數為NaN
。 如果文本框為空,則應將其默認為零。
您可以使用isNaN
[MDN] function 來解決計算問題:
var colorPages = parseInt(document.getElementById("color").value);
var blackPages = parseInt(document.getElementById("black").value);
if (isNaN(colorPages))
{
colorPages = 0;
}
if (isNaN(blackPages))
{
blackPages = 0;
}
這是工作解決方案。 http://jsfiddle.net/UHnRL/2/
=
缺少以下標記中的類型
<input type "text" id="total_price" readonly="readonly" />
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