获取数组中每个元素的长度-JavaScript
问题描述:
我想获取数组中每个元素的长度
I want to get length of every element in array
我的代码是
var a = "Hello world" ;
var chars = a.split(' ');
所以我将有一个
chars = ['Hello' , 'world'] ;
但是我怎样才能得到每个单词的长度呢?
but how I can get length of each word like this ?
Hello = 5
world = 5
答
您可以使用map Array函数:
You can use map Array function:
var lengths = chars.map(function(word){
return word.length
})