let arr = [
{age:18,name:a}
{age:13,name:b}
{age:18,name:c}
{age:4,name:e}
]
遍历arr数组,如果age是18,把当前这个数据name字段加入当前数据后面
最后结果是这样:
let arr = [
{age:18,name:a}
{name:a}
{age:13,name:b}
{age:18,name:c}
{name:c}
{age:4,name:e}
]