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How to force JS to do math instead of putting two strings together7个答案我想添加所有的卡路里内容在我的javascript像这样:
$(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); }); }); });
而不是添加变量,它们被连接起来。我试过使用parseInt,parseFloat和Number,但我仍然只是连接而不是添加。请在http://maureenmoore.com/momp_112412/121912_800.html查看来源