Javascript/jQuery:从数组中删除所有非数字值 [英] Javascript/jQuery: remove all non-numeric values from array

问题描述

对于数组:["5","something","","83","text",""]

如何从数组中删除所有非数字和空值?所需的输出:["5","83"]

How to remove all non-numeric and empty values from an array? Desired output: ["5","83"]

推荐答案

使用检查值是否为数字的回调函数:

var arr2 = arr.filter(function(el) {
    return el.length && el==+el;
//  more comprehensive: return !isNaN(parseFloat(el)) && isFinite(el);
});

array.filter具有一个polyfill 用于IE8等较旧的浏览器.

array.filter has a polyfill for older browsers like IE8.

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