Question

我正在使用$.each函数循环对象，但我得到的是不变的值。

我的代码出了什么问题？

var mainPageCircle = {
    circles: {
        c1: {
            color: '#730000',
            text: 'Content'
        },
        c2: {
            color: '#004f74',
            text: 'Consulting'
        },
        c3: {
            color: '#146c00',
            text: 'Commerce'
        }
    },
    radious: 100,
    stroke: 10,
    strokeColor: '#fff',
    opacity: 0.7
}

$.each(mainPageCircle, function(key, value) {
    var circles = value.circles,
        radious = value.radious;
    $.each(circles, function(index, c) {
        console.log(index, c); // i am getting error; i need index should be 0,1,2 and c should be : c1,c2,c3 values
    })
})

Answer 1

这样的东西？

var mainPageCircle = {
    circles :{
        c1:{color:'#730000',text:'Content'},
        c2:{color:'#004f74',text:'Consulting'},
        c3:{color:'#146c00',text:'Commerce'}
    },
    radious:100,
    stroke:10,
    strokeColor:'#fff',
    opacity:0.7
};

var i = 0;

$.each(mainPageCircle.circles, function(){
    console.log(i, this); 
    //i: current index
    //this: c1, c2 etc
    //use properties on this to fetch the values
    //this.color for example
    i++;
});

您将无法在示例中将key用作索引整数，因为它将获取对象键，而不是循环中的当前索引。

Fiddle

Answer 2

我不确定你的意图是什么，但你可能想做的事情如下：

var mainPageCircle = {
    circles :{
        c1:{color:'#730000',text:'Content'},
        c2:{color:'#004f74',text:'Consulting'},
        c3:{color:'#146c00',text:'Commerce'}
    },
    radious:100,
    stroke:10,
    strokeColor:'#fff',
    opacity:0.7
}

var circles = mainPageCircle.circles,
    radious = mainPageCircle.radious;
$.each(circles, function (index, c) {
    console.log(index,c); // c1, props, etc...
    console.log(parseInt(index,10)); // 1,2,3...
});

Answer 3

您的每个项目都在运行mainPageCircle的所有项目，而不仅仅是其中定义的圈子。这可能更符合您的目标：

var mainPageCircle = {
    circles :{
        c1:{color:'#730000',text:'Content'},
        c2:{color:'#004f74',text:'Consulting'},
        c3:{color:'#146c00',text:'Commerce'}
    },
    radious:100,
    stroke:10,
    strokeColor:'#fff',
    opacity:0.7
    }
$.each(mainPageCircle.circles , function (key,value) {
       var circles = value,radious = mainPageCircle.radious;
       $.each(circles, function (index,c) {
            console.log(index,c);
        });
});

每个函数中的每个函数的Jquery返回undefined

3 个答案:

Fiddle