1. 技术文章
  2. jQuery Loop? Clone? Simply WHY?

jQuery Loop? Clone? Simply WHY?

由 余生颓废 提交于 2019-12-10 23:53:54

问题


NEW VERSION (not new problem...)

So, i got a "loop" problem with a .click(); and a .html();.

Retrieve XML datas: OK

function afficher(NomPizz, Prix1, Prix2, Prix3) {//HERE IS MY CODE//});

Print them to screen: OK

$('#pricecontainer').show(); //Display my container and put values in with .html();
$('#prix1').html('SOLO 1P<p id="p1" style="line-height:10px;">' + Prix1.toFixed(2) + '</p>');
$('#prix2').html('MAXI 2P<p id="p2" style="line-height:10px;">' + Prix2.toFixed(2) + '</p>');
$('#prix3').html('SUPER 4P<p id="p3" style="line-height:10px;">' + Prix3.toFixed(2) + '</p>');​

Append value to other div when clicked: OK but NOT

Everithing works... ONCE ! When I click more times, the value "clone" itself.

So, if I click one time: 1 Items i added.

I got: 1 OK

Two times click.

I got 3, The previous one and TWO MORE !

Three times click.

I got 6, The three previous and THRE MORE !

Etc... Etc...

I Put this code INTO my function afficher(); The only one solution i've found... BAD one !

$("clickedItemId").click(function() {
    var Figure = $(this).find('p').html();
    totalArea.value += '+' + Figure;
    var Screen = totalArea.value.replace(/'/g, ' ');
    var result = eval(Screen);
    totalArea.value = result;
    var $newItem = "<span style='float:left'>1 " + NomPizz.toUpperCase() + "</span><span style='float:right'>" + Figure + "</span><br/>";
    $('<div><div>').html($newItem).appendTo(RecapTick);
    Display2.value = "TOTAL (EUR): " + totalArea.value;
    $('#pricecontainer').hide();
});​

So, the ENTIRE code of my function afficher(); will be:

function afficher(NomPizz, Prix1, Prix2, Prix3) {
    var totalArea = document.getElementById('totalArea');
    var Display2 = document.getElementById('Display2');
    var RecapTick = document.getElementById('MidTiTx');
    $('#pricecontainer').show();
    $('#prix1').html('SOLO 1P<p id="p1" style="line-height:10px;">' + Prix1.toFixed(2) + '</p>');
    $('#prix2').html('MAXI 2P<p id="p2" style="line-height:10px;">' + Prix2.toFixed(2) + '</p>');
    $('#prix3').html('SUPER 4P<p id="p3" style="line-height:10px;">' + Prix3.toFixed(2) + '</p>');
    //BUG HERRERRERERERERER
    $("clickedItemId").click(function() {
        var Figure = $(this).find('p').html();
        totalArea.value += '+' + Figure;
        var Screen = totalArea.value.replace(/'/g, ' ');
        var result = eval(Screen);
        totalArea.value = result;
        var $newItem = "<span style='float:left'>1 " + NomPizz.toUpperCase() + "</span><span style='float:right'>" + Figure + "</span><br/>";
        $('<div><div>').html($newItem).appendTo(RecapTick);
        Display2.value = "TOTAL (EUR): " + totalArea.value;
        $('#pricecontainer').hide();
    });
};​

PS I LIVE HERE THE OLD VERSION OF THE POST (Same pb with other code):

So, my prolem is the following:

[LIVE DEMO][1]

EDIT: [DOWNLOAD SOURCE][2]

It's a simple cart that retrieves the list of products from a xml file. This part works !

When they are clicked, the products added to the list below, but when you click repeatedly on the same, the total of these should be added ... This is where I get stuck !

I tried to change the line 62:

tot = parseInt(jQuery(this).find('.prow').html());

To:

tot = parseInt(jQuery(this).find('.prow').html()+1);

But not working... I think the problem is that I am using. .click(); with onclick="" method ??? Or maybe because of bad "var" use ?

Please someone enlighten me !

Here is my jsCode:

function calculate(){
  var tot = 0;
  jQuery(".totprice").each(function(e,b){
      tot += parseInt(jQuery(this).text());
  });
  return jQuery("#amt").html("$"+tot);
}

function showprod(){
  jQuery(".prod").each(function(e){
      jQuery(this).delay(500*e).fadeIn('fast');
  });
}

function clearcart(){
  jQuery("#clear").live('click',function(){
      jQuery(".tetew").fadeIn(4000,function(){
          jQuery(this).remove();
          calculate();
      });
  });
}

function delete_ajax(){
  jQuery(".del").live('click',function(e){
      var a = jQuery(this);
      var p = a.parent().parent().parent().parent().parent();
      if(p){
          p.fadeOut('slow',function(){
              jQuery(this).remove();
              calculate();
          });
      }
  });
}

function addtocart(){
jQuery(".addtocart").click(function(e){
      var getprod = jQuery(this).attr("prodid");
      var getval  = jQuery(this).attr("prodval");

      jQuery("#msg").fadeIn('slow');

      jQuery.ajax({
          type:'GET',
          url:'db.xml',
          dataType:'xml',
          success: function(xml){
              jQuery(xml).find('databases').each(function(){
                  jQuery(this).find('prod').each(function(e){
                  var db_id = jQuery(this).attr('id');

                  jQuery("#msg").fadeOut('slow');
                      if(getprod == db_id){
                          var cookies = 1;
                          jQuery(".tetew").each(function(){
                              var _this = jQuery(this);
                              var _store = _this.find('.pstore');
                              var ident = _this.find('.pqty');

                              if(getprod == ident.text()){
                                  var tot = parseInt(jQuery(this).find('.prow').html()); //Put a +1 here won't work...
                                  jQuery(this).find('.prow').html(tot);
                                      var restot = parseInt(jQuery(this).find('.prow').text()) * parseInt(jQuery(this).find('.price').text());
                                      jQuery(this).find('.totprice').html(restot);
                                  cookies = 0;
                                  return false;
                              }else{
                                  cookies = 1;
                              }
                          });

                          if(cookies == 1){

                          var results = "<div class='tetew'>";
                              results +="<table>";
                              results +="<tr>";
                              results +="<td class='pqty' style='display:none' valign='top'>" + jQuery(this).attr("id") + "</td>";
                              results +="<td class='img' valign='top'><img src='" + jQuery(this).attr('img') + "' width='40' height='40' /></td>";
                              results +="<td class='pstore' valign='top'>" + jQuery(this).text() + "</td>";               
                              results +="<td class='prow' valign='top'>1</td>";                           
                              results +="<td class='price' valign='top'>" + jQuery(this).attr('price') + "</td>";                     
                              results +="<td class='totprice' valign='top'>" + jQuery(this).attr('price') + "</td>";
                              results +="<td  valign='top'><a href='javascript:void(0)' class='del'>Delete</a></td>";
                              results +="</tr>";
                              results +="</table>";
                              results +="</div>";
                          }

                          jQuery(".tetew:eq("+e+")").hide().fadeIn('fast');
                              jQuery("#addto").append(results);
                              calculate();
                          return false;
                      }
                  });

              }); 
          }
      });

  });
}

 function loadXMLdb() {
        $.ajax({
            type: "GET",
            url: "db.xml",
            dataType: "xml",
            success: function(xml) {
                $(xml).find('prod').each(function() {
                    var _Nom = jQuery(this).text();
                    var Col1 = jQuery(this).attr('id');
                    var Col2 = jQuery(this).attr('price');
                    var Col3 = $(this).find('grand').text();
                    $('<div class="prod" style="display:block;" onclick="addtocart();"></div>').html(_Nom + '<br /><img

src="images/pizza.png">
Ajouter').appendTo(".vprod");

                });
            }
        });

    }

jQuery(document).ready(function(){    
  showprod();
  clearcart();
  addtocart();    
  delete_ajax();
loadXMLdb();
});

[1]: http://bzez.0fees.net/examples/jCart/ [2]: http://bzez.0fees.net/examples/jCart/jCart.zip


回答1:


it seems that your cart will only reflect what is in the xml file, so you can only have 1 of each item in it. I suggest that you look at your problem differently.

try something like this:

var cart = [];

var items = [
    {id:1, price:100, name:"Catch Arena"},
    {id:2, price:400, name:"Pepperonni"},
    {id:3, price:1400, name:"Fruits de Mer"},
    {id:4, price:1400, name:"Chickenita"},
];

then, add an item to the cart with:

<a href="#" onclick="addToCart(0);">Add Catch Arena</a>
<a href="#" onclick="addToCart(1);">Add Pepperonni</a>
<a href="#" onclick="addToCart(2);">Add Fruits de Mer</a>
<a href="#" onclick="addToCart(3);">Add Chickenita</a>

the addToCart I've got here uses the index (zero based) of the array:

window.addToCart = function(idx) {
    cart.push(items[idx]);
    displayCart();
};

Now you've got a cart, you need to display it:

<div id="ShoppingCart">Your cart is empty</div>
<div id="total"></div>
...
window.displayCart = function() {
    var cartHtml = [];
    var cartTotal = 0;
    for (i=0; i<cart.length; i++) {
        cartHtml.push("<div>" + cart[i].name + ", " + cart[i].price + "</div>");
        cartTotal += cart[i].price;
    }
    $('#total').html(cartTotal);
    $('#ShoppingCart').html(cartHtml.join(''));
};

I've got this running in a jsfiddle: http://jsfiddle.net/R4rzC/

I wouldn't say this is best practice either, as the cart should probably synced with a backend database etc, but I dare say there is a reason why you're implementing a cart is js, probably for technical reasons!




回答2:


I'd like to suggest a re-write of the javascript code. (sometimes this is really going to help you to get a clearer solution)

at this state it is quite confusing and hard to read/debug. You'll probably have more bugs later on this way.

When I recreated locally and tried the loop, it is looping more than once. And you aren't fully taking advantage of jQuery SELECTORs, please look it up http://api.jquery.com/category/selectors/

I'll answer your ques tonight when I get home, and provide some more solution. in the meantime, try to rewrite this if you can

Try to do it like this. putting product_ids in TR

var obj = $('#table tr#prod_id_2').find('.prow');

var new_qty = obj.html() * 1; //gets current qty
new_qty = new_qty + 1;

obj.html( new_qty );



回答3:


So, after some sleeping hours I found a solution.

I created a new function poster(); who retrieve clicked element info and called by onclick="poster(NomPizz, Prix)".

Here is the working new code:

If someone have better idea i'll take !

function afficher(NomPizz, Prix1, Prix2, Prix3) {
            var totalArea = document.getElementById('totalArea');
            var Display2 = document.getElementById('Display2');
            $('#pricecontainer').show();   \\Added <div> above
            $('#prix1').html('<div onclick="poster(\''+NomPizz+'\','+Prix1+')">SOLO 1P '+Prix1.toFixed(2)+'</div>');
            $('#prix2').html('<div onclick="poster(\''+NomPizz+'\','+Prix2+')">MAXI 2P '+Prix2.toFixed(2)+'</div>');
            $('#prix3').html('<div onclick="poster(\''+NomPizz+'\','+Prix3+')">SUPER 4P '+Prix3.toFixed(2)+'</div>');
            };

//NEW FUNCTION
function poster(NomPizz, Prix) {
            var RecapTick = document.getElementById('MidTiTx');
            totalArea.value += '+'+ Prix;
            var Screen = totalArea.value.replace(/'/g, ' ');
            var result = eval(Screen);
            totalArea.value = result.toFixed(2);
            var $newItem = "<span style='float:left'>1 " + NomPizz.toUpperCase() + "</span><span style='float:right'>" + Prix.toFixed(2)+"</span><br/>";
            $('<div><div>').html($newItem).appendTo(RecapTick);
            Display2.value = "TOTAL (EUR): "+totalArea.value;
            $('#pricecontainer').hide();
};


来源：https://stackoverflow.com/questions/13504315/jquery-loop-clone-simply-why

标签
xml
jquery
auto-increment
xml-database
易学教程内所有资源均来自网络或用户发布的内容，如有违反法律规定的内容欢迎反馈！
该文章没有解决你所遇到的问题?点击提问,说说你的问题,让更多的人一起探讨吧!