在JQuery中檢查數組和打印變量的索引？

Question

我有2個變量數組：

var a = [22, 34, 56,22] 
var b = [red, blue, yellow, gray ] 

我檢查數組a的索引，其中具有值22，索引是0和3然後我打印var b[0]和b[3]和我得到Red和Gray。

我該如何用/在JQuery中做到這一點？

Answer 1

您的意思是？

var a = [22, 34, 56, 22]; 
    var b = ["red", "blue", "yellow", "gray"]; 
    var input = 22; 

    var matches = $.map(a, function (o, i) { //Using map to get the array of matches, apply map on a 
     if (o === input) return b[i]; //check if the value is equal to input, if so return the value from array b for the same index 
    }) 
    console.log(matches); //matches will be array of matches 

Fiddle