JSLite - Array object operations

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Maximum (small) value

//顺带小教程
//获取最大值最小值
var a=[1,2,3,5];
console.log(Math.max.apply(null, a));//最大值
console.log(Math.min.apply(null, a));//最小值

var a=[1,2,3,[5,6],[1,4,8]];
var ta=a.join(",").split(",");//转化为一维数组
console.log(Math.max.apply(null,ta));//最大值
console.log(Math.min.apply(null,ta));//最小值

Array.remove

This is extended on the Array prototype object.

[1,5,6].remove(1)//⇒ [5, 6]

$.intersect

Array intersection

$.intersect([1,2,3,"asdkjf"],[2,3,6,"asdkjf"])
//⇒ [2, 3, "asdkjf"]

$.unique

Remove duplicates in the array element.

$.unique([1,2,12,3,2,1,2,1,1,1,1]) //⇒ [1, 2, 12, 3]
var arr = $("#box").concat($("#box")) //两个一模一样的数组
$.unique(arr) //去重

$.sibling

Get the collection of node object attributes based on the type (node,type).

$.sibling($("input"),"type")    //⇒ ["text", "button", "checkbox"]   
$.sibling($("input"),"tagName") //⇒ ["INPUT"]

$.inArray

Search for the specified value in the array and return its index (returns -1 if not found).

var arr = [ 4, "Pete", 8, "John" ];
$.inArray("John", arr);     //⇒ 3
$.inArray(4, arr);          //⇒ 0
$.inArray("David", arr);    //⇒ -1
$.inArray("Pete", arr, 2);  //⇒ -1

$.map

By traversing the node objects in the collection, a new array is returned through the function, null or undefined will be filtered out.

$.map({"w":1,"c":2,"j":3},function(idx,item){
     return item
}); 
//⇒ ["w", "c", "j"]

$.each

General traversal method, can be used to traverse objects and arrays

$.each(["a", "b", "c"], function(index, item){
    console.log("item %d is: %s", index, item)
})

$.grep

Use the filter function to filter array elements.

$.grep( [0,1,2], function(n,i){
  return n != 0;
});

$.parseJSON

The same method as JSON.parse, accepts a standard format JSON string and returns the parsed JavaScript object.