javascript – jquery – 获取2个数组的类似值的索引

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我想得到array1和array2的类似值的索引,并将其存储到stored_index变量中.

array1 = ["50","51","52","53","54","55","56","57","58","59"];

array2 = ["59","55","51"];

存储的索引应如下所示.

stored_index = [9,5,1]; // index 9,5,1 is equal to their indices in array 1

解决方法:

Javascript map()可以这样做：

var array1 = ["50","51","52","53","54","55","56","57","58","59"];
var array2 = ["59","55","51"];
var stored_index = array2.map(function(val){
    return array1.indexOf(val)
}).filter(function(val){
    return (val != -1)
});

console.log(stored_index)

DEMO

删除过滤器：

var array1 = ["50","51","52","53","54","55","56","57","58","59"];
var array2 = ["59","55","51"];
var stored_index = array2.map(function(val){
    return (array1.indexOf(val) != -1) ? array1.indexOf(val) : null;
});

console.log(stored_index)//output [9, 5, 1]

Updated DEMO

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