【JS】根据数组里的对象集合的某个字段对数组进行排序

arrSortByField.js

var arr = [ 
    {name:'hdj', age:28}, 
    {name:'yim', age:25}, 
    {name:'hdq', age:26},{name:'hdq', age:22},{name:'hdq', age:555},{name:'hdq', age:1111},{name:'hdq', age:99}
];




function arrSortByField(arr, field,order,primer){
	var order = (order == undefined) ? 1 : ((order == 'asc') ? 1 : -1) ;
	var primer = primer || parseInt;

	var sortFunc = function(field,reverse,primer){

	    return function (a, b) {
	        var a = a[field];
	        var b = b[field];
	        if (typeof (primer) != 'undefined') {
	            a = primer(a);
	            b = primer(b);
	        }
	        if (a < b) return reverse * -1;
	        if (a > b) return reverse * 1;
	        return 0;
	    }

	}

	return arr.sort(sortFunc(field,order,primer))
}


arrSortByField(arr,'age');
arrSortByField(arr,'age','asc');//asc为升序，des为降序