如何在 JavaScript 中替换所有出现的数组

Question

If my array is gave me: ["ITEM_1", "ITEM_2", "ITEM_3"]

How I can remove the part ITEM_ to get only ["1", "2", "3"] ?

Answer 1

You could do:

 console.log( ["ITEM_1", "ITEM_2", "ITEM_3"].join().match(/\\d+/g) )

Answer 2

or:

var arr = ["ITEM_1", "ITEM_2", "ITEM_3"].map(function(item){
return item.split('_')[1];
});

or:

var arr = ["ITEM_1", "ITEM_2", "ITEM_3"].map(function(item){
return item.replace('ITEM_', '');
});