我正在尝试像这样在我的JavaScript中添加所有卡路里含量:$(function() { var data = []; $( "#draggable1" ).draggable(); $( "#draggable2" ).draggable(); $( "#draggable3" ).draggable(); $("#droppable_box").droppable({ drop: function(event, ui) { var currentId = $(ui.draggable).attr('id'); var total = 0; data.push($(ui.draggable).attr('id')); if(currentId == "draggable1"){ var myInt1 = parseFloat($('#MealplanCalsPerServing1').val()); } if(currentId == "draggable2"){ var myInt2 = parseFloat($('#MealplanCalsPerServing2').val()); } if(currentId == "draggable3"){ var myInt3 = parseFloat($('#MealplanCalsPerServing3').val()); } if ( typeof myInt1 === 'undefined' || !myInt1 ) { myInt1 = parseInt(0); } if ( typeof myInt2 === 'undefined' || !myInt2){ myInt2 = parseInt(0); } if ( typeof myInt3 === 'undefined' || !myInt3){ myInt3 = parseInt(0); } total = parseFloat(myInt1 + myInt2 + myInt3); $('#response').append(total); } }); $('#myId').click(function(event) { $.post("process.php", ({ id: data }), function(return_data, status) { alert(data); //alert(total); }); });});无需添加变量,而是将它们串联在一起。我试过使用parseInt,parseFloat和Number,但是我仍然只是串联而不是加法。请在http://m
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