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POOn keypress of jquery change the value of textbox
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I got the JSON data from my ASP.net MVC Controller, and loop it to display in my View. <img src="https://i.stack.imgur.com/FAfX8.png" alt="enter image description here"> <pre><code>$(document).ready(function () { var amount = 0; var subTotal = 0; var vat = 0; var total = 0; var qty = 0; var urlSession = '<%: Url.Content("~/") %>' + "Quotation/ProductInSession"; $.getJSON(urlSession, function (dataQuote) { var i = dataQuote.ja.length; $.each(dataQuote.ja, function (index, data) { amount = data.ProductQty * data.ProductPrice; subTotal += amount; $("#listProduct tr#first_row").after('<tr style="height:25px;"><td class="tablecell2" width="40px" align="center">' + i + '</td><td class="tablecell2">' + data.ProductName + '</td><td class="tablecell2" width="70px" align="center"><input id="qty" type="text" value="' + data.ProductQty + '" size="2"/></td><td class="tablecell2" width="90px" align="right" style="padding-right:5px;">' + data.ProductPrice + '</td><td class="tablecell2" style="border-right:1px solid silver;padding-right:5px;" width="120px" align="right">' + amount + '</td></tr>'); i--; $('#qty').keypress(function (event) { var keycode = (event.keyCode ? event.keyCode : event.which); if (keycode == '13') { qty = $("#qty").val(); $("#qty").html(qty); amount = qty * data.ProductPrice; $("#amount").html(amount); } }); }); vat = (subTotal * 10) / 100; total = subTotal + vat; $("#vvat").html("" + vat + ""); $("#ssubtotal").html(subTotal); $("#sgrandtotal").html("" + total + ""); }); }); </code></pre> What I want to do is : <ol> <li>Change the value in textbox when I press the key Enter</li> <li>Change the value of the amount (amount = qty * UnitPrice)</li> </ol> Should I create another action of the controller to handle this update or anything beside this. Thanks for any help anyone can give me! The 
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<jquery><asp.net-mvc>
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On keypress of jquery change the value of textbox
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