Question

我想根据元素的顶部位置更改自定义属性..

<div class="wrapper">
 <div class="class" customAttribute="2" top="600"></div>
 <div class="class" customAttribute="1" top="500"></div>
 <div class="class" customAttribute="4" top="200"></div>
 <div class="class" customAttribute="3" top="400"></div>
 <div class="class" customAttribute="6" top="300"></div>
 <div class="class" customAttribute="5" top="100"></div>
</div>
for (var i = 0; i < 6; i++) {

var firstChild = // gets the customAttribute of the child with the lowest position top value;

    $('.wrapper:nth-child( firstchild )').attr('customAttribute', i );
}

此外，最后将有超过6个div，因此它需要是程序性的。感谢。

Answer 1

这会根据您的要求调整customattribute：

var obj_arr = [];//We will push objects into this array and sort them
var div_obj_arr = $('.wrapper > div');

//iterate through div_obj_arr 
div_obj_arr.each(function(i){

    //Push an object into "obj_arr"
    obj_arr.push({
        idx:i,//pre-sorted index of the html elements
        top:$(this).attr('top')//"top" attribute values
    })
})

//sort the object array
//this ".sort(" will iterate through "obj_arr" 
//and sort them based on the "top" value
obj_arr = obj_arr.sort(function(a,b){return a.top < b.top ? -1 : 1});

//iterate through the newly sorted array of objects
//and assigns the new attribute values
$.each(obj_arr,function(i){
    divs.eq(this.idx).attr('customattribute',i);
});

根据顶部位置更改自定义属性

1 个答案: