[英]Using the each function within getJSON returns undefined
我正在使用jQuery的getJSON方法來檢索和解析一個簡單的JSON文件,但是當我將值輸出到頁面上時,它顯示為undefined
$.getJSON( 'js/example.json', function ( data ) {
var output = '';
$.each( data.exercises, function ( index, exercise ) {
output += '<li>' + exercise.work.weight + ' x ' + exercise.work.reps + '</li>';
});
$( '#example' ).html( output );
});
example.json
{
"exercises" : [
{
"name" : "Squats",
"work" : [
{
"weight" : 135,
"reps" : 5
},
{
"weight" : 225,
"reps" : 5
},
{
"weight" : 315,
"reps" : 5
}
]
},
{
"name" : "Bench",
"work" : [
{
"weight" : 135,
"reps" : 5
},
{
"weight" : 225,
"reps" : 5
},
{
"weight" : 315,
"reps" : 5
}
]
},
{
"name" : "Rows",
"work" : [
{
"weight" : 135,
"reps" : 5
},
{
"weight" : 225,
"reps" : 5
},
{
"weight" : 315,
"reps" : 5
}
]
}
]
}
我認為錯誤可能出在我的每個函數中,但我還無法識別出它。 有任何想法嗎?
您的鍛煉工作是一個數組,需要另一個循環
$.each( data.exercises, function ( index, exercise ) {
$.each(exercise.work, function (index, work) {
console.log(work);
});
});
這個:
output += '<li>' + exercise.work.weight + ' x ' + exercise.work.reps + '</li>';
假設您的JSON如下所示:
"exercises" : [
{
"name" : "Squats",
"work" :
{
"weight" : 135,
"reps" : 5
}
},
實際上,在每種情況下, work
都是一個數組。
您想要類似的東西:
$.each( data.exercises, function ( index, exercise ) {
$.each( exercise.work, function( index, workout ) {
output += '<li>' + workout.weight + ' x ' + workout.reps + '</li>';
});
});
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