javascript - 迭代数组

Question

{title:'Alan', hasChild:true},
{title:'Alice', hasDetail:true},
{title:'Amos'},
{title:'Alonzo'},
{title:'Brad'},
{title:'Brent'},    
{title:'Billy'},    
{title:'Brenda'},   
{title:'Callie'},
{title:'Cassie'},   
{title:'Chris'},

如何迭代数组并找出每个元素的索引和第一个字符。

Answer 1

迭代很容易:

for (var i = 0; i < yourArrayName.length; i++) {
    yourArrayName[i].title.charAt(0) // This is the first letter.
}