使用此javascript，购物车。我将初始数量设置为10，这很好。但是： -
我希望这是可以订购的最小数量，但是用户可以订购11,12 ...或300等。所以最小值是10，但是超过该值。
这是js：
// Create SelectList
var elmProductSelected = $('select[name="'+resultName+'"]',obj);
if(elmProductSelected.length <= 0){
elmProductSelected = $("<select></select>").attr("name",resultName).attr("multiple","multiple").hide();
refreshCartValues();
}else{
elmProductSelected.attr("multiple","multiple").hide();
populateCart(); // pre-populate cart if there are selected items
}
obj.append(elmProductSelected);
// prepare the product list
populateProducts();
if(options.selected == '1'){
showCart();
}else{
showProductList();
}
$(btShowProductList).bind("click", function(e){
showProductList();
return false;
});
$(btShowCart).bind("click", function(e){
showCart();
return false;
});
function showCart(){
$(btShowProductList).removeClass("sel");
$(btShowCart).addClass("sel");
$(elmPLContainer).hide();
$(elmCartContainer).show();
}
function showProductList(){
$(btShowProductList).addClass("sel");
$(btShowCart).removeClass("sel");
$(elmCartContainer).hide();
$(elmPLContainer).show();
}
function addToCart(i,qty){
var addProduct = products.eq(i);
if(addProduct.length > 0){
if($.isFunction(options.onAdd)) {
// calling onAdd event; expecting a return value
// will start add if returned true and cancel add if returned false
if(!options.onAdd.call(this,$(addProduct),qty)){
return false;
}
}
var pId = $(addProduct).attr(attrProductId);
var pName = $(addProduct).attr(attrProductName);
var pPrice = $(addProduct).attr(attrProductPrice);
// Check wheater the item is already added
var productItem = elmProductSelected.children("option[rel=" + i + "]");
if(productItem.length > 0){
// Item already added, update the quantity and total
var curPValue = productItem.attr("value");
var valueArray = curPValue.split('|');
var prdId = valueArray[0];
var prdQty = valueArray[1];
prdQty = (prdQty-0) + (qty-0);
var newPValue = prdId + '|' + prdQty;
productItem.attr("value",newPValue).attr('selected', true);
var prdTotal = getMoneyFormatted(pPrice * prdQty);
// Now go for updating the design
var lalQuantity = $('#lblQuantity'+i).val(prdQty);
var lblTotal = $('#lblTotal'+i).html(prdTotal);
// show product quantity updated message
showHighlightMessage(messageQuantityUpdated);
}else{
// This is a new item so create the list
var prodStr = pId + '|' + qty;
productItem = $('<option></option>').attr("rel",i).attr("value",prodStr).attr('selected', true).html(pName);
elmProductSelected.append(productItem);
addCartItemDisplay(addProduct,qty);
// show product added message
showHighlightMessage(messageItemAdded);
}
// refresh the cart
refreshCartValues();
// calling onAdded event; not expecting a return value
if($.isFunction(options.onAdded)) {
options.onAdded.call(this,$(addProduct),qty);
}
}else{
showHighlightMessage(messageProductAddError);
}
}
function addCartItemDisplay(objProd,Quantity){
var pId = $(objProd).attr(attrProductId);
var pIndex = products.index(objProd);
var pName = $(objProd).attr(attrProductName);
var pPrice = $(objProd).attr(attrProductPrice);
var prodImgSrc = $(objProd).attr(attrProductImage);
var pTotal = (pPrice - 0) * (Quantity - 0);
pTotal = getMoneyFormatted(pTotal);
// Now Go for creating the design stuff
$('.scMessageBar',elmCartList).remove();
var elmCPTitle1 = $('<div></div>').addClass("scCartItemTitle scCartItemTitle1");
if(prodImgSrc && options.enableImage && prodImgSrc.length>0){
var prodImg = $("<img></img>").attr("src",prodImgSrc).addClass("scProductImageSmall");
if(prodImg && options.enableImageTooltip){
prodImg.bind("mouseenter mousemove",function(){
showTooltip($(this));
return false;
});
prodImg.bind("mouseleave",function (){
tooltip.hide();
return true;
});
}
elmCPTitle1.append(prodImg);
}
var elmCP = $('<div></div>').attr("id","divCartItem"+pIndex).addClass("scCartItem");
var pTitle = pName;
var phtml = formatTemplate(options.cartItemTemplate, $(objProd));
var elmCPContent = $('<div></div>').html(phtml).attr("title",pTitle);
elmCPTitle1.append(elmCPContent);
var elmCPTitle2 = $('<label>'+pPrice+'</label>').addClass("scCartItemTitle scCartItemTitle2");
var inputQty = $('<input type="text" value="'+Quantity+'" />').attr("id","lblQuantity"+pIndex).attr("rel",pIndex).addClass("scTxtQuantity2");
$(inputQty).bind("change", function(e){
var newQty = $(this).val();
var prodIdx = $(this).attr("rel");
newQty = newQty - 0;
if(validateNumber(newQty)){
updateCartQuantity(prodIdx,newQty);
}else{
var productItem = elmProductSelected.children("option[rel=" + prodIdx + "]");
var pValue = $(productItem).attr("value");
var valueArray = pValue.split('|');
var pQty = valueArray[1];
$(this).val(pQty);
showHighlightMessage(messageQuantityErrorUpdate);
}
return true;
});
var elmCPTitle3 = $('<div></div>').append(inputQty).addClass("scCartItemTitle scCartItemTitle3");
var elmCPTitle4 = $('<label>'+pTotal+'</label>').attr("id","lblTotal"+pIndex).addClass("scCartItemTitle scCartItemTitle4");
var btRemove = $('<a>'+labelRemove+'</a>').attr("rel",pIndex).attr("href","#").addClass("scRemove").attr("title","Remove from Cart");
$(btRemove).bind("click", function(e){
var idx = $(this).attr("rel");
removeFromCart(idx);
return false;
});
var elmCPTitle5 = $('<div></div>').addClass("scCartItemTitle scCartItemTitle5");
elmCPTitle5.append(btRemove);
elmCPTitle1.append(elmCPContent);
elmCP.append(elmCPTitle1).append(elmCPTitle2).append(elmCPTitle3).append(elmCPTitle4).append(elmCPTitle5);
elmCartList.append(elmCP);
}
function removeFromCart(idx){
var pObj = products.eq(idx);
var pName = $(pObj).attr(attrProductName)
var removeMsg = messageConfirmRemove.replace('_PRODUCTNAME_',pName); // display default
if(confirm(removeMsg)){
if($.isFunction(options.onRemove)) {
// calling onRemove event; expecting a return value
// will start remove if returned true and cancel remove if returned false
if(!options.onRemove.call(this,$(pObj))){
return false;
}
}
var productItem = elmProductSelected.children("option[rel=" + idx + "]");
var pValue = $(productItem).attr("value");
var valueArray = pValue.split('|');
var pQty = valueArray[1];
productItem.remove();
$("#divCartItem"+idx,elmCartList).slideUp("slow",function(){$(this).remove();
showHighlightMessage(messageItemRemoved);
//Refresh the cart
refreshCartValues();});
if($.isFunction(options.onRemoved)) {
// calling onRemoved event; not expecting a return value
options.onRemoved.call(this,$(pObj));
}
}
}
function updateCartQuantity(idx,qty){
var pObj = products.eq(idx);
var productItem = elmProductSelected.children("option[rel=" + idx + "]");
var pPrice = $(pObj).attr(attrProductPrice);
var pValue = $(productItem).attr("value");
var valueArray = pValue.split('|');
var prdId = valueArray[0];
var curQty = valueArray[1];
if($.isFunction(options.onUpdate)) {
// calling onUpdate event; expecting a return value
// will start Update if returned true and cancel Update if returned false
if(!options.onUpdate.call(this,$(pObj),qty)){
$('#lblQuantity'+idx).val(curQty);
return false;
}
}
var newPValue = prdId + '|' + qty;
$(productItem).attr("value",newPValue).attr('selected', true);
var prdTotal = getMoneyFormatted(pPrice * qty);
// Now go for updating the design
var lblTotal = $('#lblTotal'+idx).html(prdTotal);
showHighlightMessage(messageQuantityUpdated);
//Refresh the cart
refreshCartValues();
if($.isFunction(options.onUpdated)){
// calling onUpdated event; not expecting a return value
options.onUpdated.call(this,$(pObj),qty);
}
}
function refreshCartValues(){
var sTotal = 0;
var cProductCount = 0;
var cItemCount = 0;
elmProductSelected.children("option").each(function(n) {
var pIdx = $(this).attr("rel");
var pObj = products.eq(pIdx);
var pValue = $(this).attr("value");
var valueArray = pValue.split('|');
var prdId = valueArray[0];
var pQty = valueArray[1];
var pPrice = $(pObj).attr(attrProductPrice);
sTotal = sTotal + ((pPrice - 0) * (pQty - 0));
cProductCount++;
cItemCount = cItemCount + (pQty-0);
});
subTotal = sTotal;
cartProductCount = cProductCount;
cartItemCount = cItemCount;
elmBottomSubtotalValue.html(getMoneyFormatted(subTotal));
cartMenu = labelCartMenuName.replace('_COUNT_',cartProductCount);
cartMenuTooltip = labelCartMenuNameTooltip.replace('_PRODUCTCOUNT_',cartProductCount).replace('_ITEMCOUNT_',cartItemCount);
btShowCart.html(cartMenu).attr("title",cartMenuTooltip);
if(cProductCount <= 0){
showMessage(messageCartEmpty,elmCartList);
}else{
$('.scMessageBar',elmCartList).remove();
}
}
function populateCart(){
elmProductSelected.children("option").each(function(n) {
var curPValue = $(this).attr("value");
var valueArray = curPValue.split('|');
var prdId = valueArray[0];
var prdQty = valueArray[1];
if(!prdQty){
prdQty = 1; // if product quantity is not present default to 1
}
var objProd = jQuery.grep(products, function(n, i){return ($(n).attr(attrProductId) == prdId);});
var prodIndex = products.index(objProd[0]);
var prodName = $(objProd[0]).attr(attrProductName);
$(this).attr('selected', true);
$(this).attr('rel', prodIndex);
$(this).html(prodName);
cartItemCount++;
addCartItemDisplay(objProd[0],prdQty);
});
// Reresh the cart
refreshCartValues();
}
function fillCategory(){
var catCount = 0;
var catItem = $('<option></option>').attr("value",'').attr('selected', true).html('All');
elmCategory.prepend(catItem);
$(products).each(function(i,n){
var pCategory = $(this).attr(attrCategoryName);
if(pCategory && pCategory.length>0){
var objProd = jQuery.grep(elmCategory.children('option'), function(n, i){return ($(n).val() == pCategory);});
if(objProd.length<=0){
catCount++;
var catItem = $('<option></option>').attr("value",pCategory).html(pCategory);
elmCategory.append(catItem);
}
}
});
if(catCount>0){
$(elmCategory).bind("change", function(e){
$(txtSearch).val('');
populateProducts();
return true;
});
}else{
elmCategory.hide();
lblCategory.hide();
}
}
function populateProducts(searchString){
var isSearch = false;
var productCount = 0;
var selectedCategory = $(elmCategory).children(":selected").val();
// validate and prepare search string
if(searchString){
searchString = trim(searchString);
if(searchString.length>0){
isSearch = true;
searchString = searchString.toLowerCase();
}
}
// Clear the current items on product list
elmPLProducts.html('');
// Lets go for dispalying the products
$(products).each(function(i,n){
var productName = $(this).attr(attrProductName);
var productCategory = $(this).attr(attrCategoryName);
var isValid = true;
var isCategoryValid = true;
if(isSearch){
if(productName.toLowerCase().indexOf(searchString) == -1) {
isValid = false;
}else{
isValid = true;
}
}
// Category filter
if(selectedCategory && selectedCategory.length>0){
selectedCategory = selectedCategory.toLowerCase();
if(productCategory.toLowerCase().indexOf(selectedCategory) == -1) {
isCategoryValid = false;
}else{
isCategoryValid = true;
}
}
if(isValid && isCategoryValid) {
productCount++;
var productPrice = $(this).attr(attrProductPrice);
var prodImgSrc = $(this).attr(attrProductImage);
var elmProdDiv1 = $('<div></div>').addClass("scPDiv1");
if(prodImgSrc && options.enableImage && prodImgSrc.length>0){
var prodImg = $("<img></img>").attr("src",prodImgSrc).addClass("scProductImage");
if(prodImg && options.enableImageTooltip){
prodImg.bind("mouseenter mousemove",function(){
showTooltip($(this));
return false;
});
prodImg.bind("mouseleave",function (){
tooltip.hide();
return true;
});
}
elmProdDiv1.append(prodImg);
}
var elmProdDiv2 = $('<div></div>').addClass("scPDiv2"); // for product name, desc & price
var productHtml = formatTemplate(options.productItemTemplate, $(this));
elmProdDiv2.html(productHtml);
var elmProdDiv3 = $('<div></div>').addClass("scPDiv3"); // for button & qty
var btAddToCart = $('<a>'+labelAddToCartButton+'</a>').attr("href","#").attr("rel",i).attr("title",labelAddToCartButton).addClass("scAddToCart");
$(btAddToCart).bind("click", function(e){
var idx = $(this).attr("rel");
var qty = $(this).siblings("input").val();
if(validateNumber(qty)){
addToCart(idx,qty);
}else{
$(this).siblings("input").val(1);
showHighlightMessage(messageQuantityErrorAdd);
}
return false;
});
var inputQty = $('<input type="text" value="10" />').addClass("scTxtQuantity"); //minimum quantity
var labelQty = $('<label>'+labelQuantityText+':</label>').addClass("scLabelQuantity");
elmProdDiv3.append(labelQty).append(inputQty).append(btAddToCart);
var elmProds = $('<div></div>').addClass("scProducts");
elmProds.append(elmProdDiv1).append(elmProdDiv2).append(elmProdDiv3);
elmPLProducts.append(elmProds);
}
});
if(productCount <= 0){
showMessage(messageProductEmpty,elmPLProducts);
}
}
// Display message
function showMessage(msg, elm){
var elmMessage = $('<div></div>').addClass("scMessageBar").hide();
elmMessage.html(msg);
if(elm){
elm.append(elmMessage);
elmMessage.show();
}
}
function showHighlightMessage(msg){
msgBox2.html(msg);
msgBox2.fadeIn("fast", function() {
setTimeout(function() { msgBox2.fadeOut("fast"); }, 2000);
});
}
// Show Image tooltip
function showTooltip(img) {
var height = img.height();
var width = img.height();
var imgOffsetTop = img.offset().top;
jQuery.log(img.offset());
jQuery.log(img.position());
jQuery.log("--------------");
tooltip.html('');
var tImage = $("<img></img>").attr('src',$(img).attr('src'));
tImage.height(toolMaxImageHeight);
tooltip.append(tImage);
var top = imgOffsetTop - height ;
var left = width + 10;
tooltip.css({'top':top, 'left':left});
tooltip.show("fast");
}
function validateNumber(num){
var ret = false;
if(num){
num = num - 0;
if(num && num > 0){
ret = true;
}
}
return ret;
}
// Get the money formatted for display
function getMoneyFormatted(val){
return val.toFixed(2);
}
// Trims the blankspace
function trim(s){
var l=0; var r=s.length -1;
while(l < s.length && s[l] == ' ')
{ l++; }
while(r > l && s[r] == ' ')
{ r-=1; }
return s.substring(l, r+1);
}
// format the product template
function formatTemplate(str, objItem){
resStr =str.split("<%=");
var finalStr = '';
for(i=0;i<resStr.length;i++){
var tmpStr = resStr[i];
valRef = tmpStr.substring(0, tmpStr.indexOf("%>"));
if(valRef!='' || valRef!=null){
var valRep = objItem.attr(valRef); //n[valRef];
if(valRep == null || valRep == 'undefined'){
valRep = '';
}
tmpStr = tmpStr.replace(valRef+'%>',valRep);
finalStr += tmpStr;
}else{
finalStr += tmpStr;
}
}
return finalStr;
}
});
};
// Default options
$.fn.smartCart.defaults = {
selected: 0, // 0 = produts list, 1 = cart
resultName: 'products_selected[]',
enableImage: false,
enableImageTooltip: false,
enableSearch: false,
enableCategoryFilter: true,
productItemTemplate:'<strong><%=pname%></strong><br /><small><%=pdesc%></small><br /><strong>Price: $<%=pprice%></strong>',
cartItemTemplate:'<strong><%=pname%></strong>',
// Events
onAdd: null, // function(pObj,quantity){ return true; }
onAdded: null, // function(pObj,quantity){ }
onRemove: null, // function(pObj){return true;}
onRemoved: null, // function(pObj){ }
onUpdate: null, // function(pObj,quantity){ return true; }
onUpdated: null, // function(pObj,quantity){ }
onCheckout: null // function(Obj){ }
};
jQuery.log = function(message) {
if(window.console) {
console.debug(message);
}
};
}）（jQuery的）;
我的数量目前在这一行设置为10：
var inputQty = $('<input type="text" value="10" />').addClass("scTxtQuantity"); //minimum quantity
增加：
// Create Bottom bar
var elmBottomBar = $('<div></div>').addClass("scBottomBar");
var elmBottomSubtotalText = $('<label>'+labelTotal+':</label>').addClass("scLabelSubtotalText");
var elmBottomSubtotalValue = $('<label>'+getMoneyFormatted(subTotal)+'</label>').addClass("scLabelSubtotalValue");
var btCheckout = $('<a>'+labelCheckout+'</a>').attr("href","#").addClass("scCheckoutButton");
$(btCheckout).click(function() {
if($.isFunction(options.onCheckout)) {
// calling onCheckout event;
options.onCheckout.call(this,elmProductSelected);
}else{
$(this).parents("form").submit();
}
return false;
});
elmBottomBar.append(btCheckout).append(elmBottomSubtotalValue).append(elmBottomSubtotalText);
obj.append(elmBottomBar);
答案 0 :(得分：1)
我不确定你在做这件事时遇到了什么问题...我认为这样可以更容易......这样......
if(inputQty.val()<10){alert("please select at least 10 quantity")}
我想你可以把它放在这里，即使我不确定但是这么认为。
$(inputQty).bind("change", function(e){
var newQty = $(this).val();
if(newQty<10){alert("please select at least 10 quantity")}
//rest of your code will go after this of bind function