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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