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POGetElementBy... FAIL - where's the mistake?
 

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  1. POGetElementBy... FAIL - where's the mistake?
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    <p>Hi this is my code and html in jsfiddle...</p> <p><a href="http://jsfiddle.net/vp9V6/56/" rel="nofollow">http://jsfiddle.net/vp9V6/56/</a></p> <p>and this is the .js:</p> <pre><code> function itemManager(){ var _me = null; var _goldAsk = 0; var _silverAsk = 0; var _eurusdAsk = 0; var construct = function(){ //init here _me = $(this); _bindHandlers(); _updateItem(125); } var _bindHandlers = function(){ _me.on('stockupdated', function(){ $('#gcost').text('Domanda oro: ' + (( _goldAsk / 31.1034768 ) / _eurusdAsk).toFixed(3) + ' Domanda argento: ' + (( _silverAsk / 31.1034768 ) / _eurusdAsk).toFixed(3) + ' Cambio €/$: ' + (_eurusdAsk).toFixed(3)); }); $('#calculate').on('click', function(){ alert("item gold ask(" + _goldAsk + ") vs silver ask(" + _silverAsk + ")"); }); $('#updateitem').on('click', function(){ _updateItem(250); }); $('#btnGetTotalsGold').on('click', function(){ var grammsOfGold = $('#goldGramms').val().length ? parseInt($('#goldGramms').val()) : 0; var carati = document.getElementById("carati").selectedIndex; $(".container-oro").text('Valutazione per ORO: ' + (((( _goldAsk / 31.1034768 ) / _eurusdAsk) * (document.getElementsByTagName("option")[carati].value)) * grammsOfGold ).toFixed(2) + ' Carati selezionati: ' + (document.getElementsByTagName("option")[carati].value)) }); $('#btnGetTotalsSilver').on('click', function(){ var grammsOfSilver = $('#silverGramms').val().length ? parseInt($('#silverGramms').val()) : 0; var millesimi = document.getElementById("millesimi").selectedIndex; $(".container-argento").text(' Valutazione per ARGENTO: ' + (((( _silverAsk / 31.1034768 ) / _eurusdAsk) * (document.getElementsByTagName("option")[millesimi].value)) * grammsOfSilver ).toFixed(2) + ' Titolo selezionato: ' + (document.getElementsByTagName("option")[millesimi].value)) }); }; var _updateItem = function(cost){ $.ajax({ type: 'POST', url: 'json.php', dataType: 'json', delay: 0, success: function(data){ _goldAsk = parseFloat(data.GOLD.ask); _silverAsk = parseFloat(data.SILVER.ask); _eurusdAsk = parseFloat(data.EURUSD.ask); _me.trigger('stockupdated'); } }) } setInterval( _updateItem, 60000); construct(); } window.onload = function(){ var item = new itemManager(); } </code></pre> <p>When i calculate the Silver value clicking the "btnGetTotalsSilver" the script show the result getting the "option" value but doesn't match the right one, it get the gold select box value:</p> <blockquote> <p>this: (document.getElementsByTagName("option")[carati].value))</p> <p>not this: (document.getElementsByTagName("option")[millesimi].value))</p> </blockquote> <p>why?</p> <p>thanks</p>
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      1. POGetElementBy... FAIL - where's the mistake?
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    1. COWhy are you using both vanilla JS and jQuery selector methods?
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      1. POGetElementBy... FAIL - where's the mistake?
      1. USSirko
    2. COwhat are you talking about?
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      1. POGetElementBy... FAIL - where's the mistake?
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    3. COYou use `$( 'selector' )` plenty of times as well as `document.getElementById()`. I would recommend being more consistent in your code.
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