如何循环和保存JSON数组中的值
这个问题在这里已经有了答案：
你可以简单地使用Array#map ：
data.users.map(e =>
(e.name.first ? e.name.first : '') + //Handles the first name
(e.name.first ? ' ' : '') + //Space between the names
(e.name.last ? e.name.last : '') //Handles the last name
);
演示：
const data = {
"users": [
{
"test": "123",
"name": {
"first": "bob",
"last": "roppo"
},
"email": "bob@gmail.com",
"phone": "+123456789"
},
{
"test": "124",
"name": {
"first": "peter",
"last": "sticer"
},
"email": "peter@gmail.com",
"phone": "+123456789"
}
]
};
let result = data.users.map(e => (e.name.first ? e.name.first : '') + (e.name.first ? ' ' : '') + (e.name.last ? e.name.last : ''));
console.log(result); 你可以使用map
data.users.map( s => ( s.name.first || "" ) + " " + ( s.name.last || "" ) );
如果两个属性值总是在那里，那么不需要短路
data.users.map( s => s.name.first + " " +s.name.last );
演示
var data = {
"users": [
{
"test": "123",
"name": {
"first": "bob",
"last": "roppo"
},
"email": "bob@gmail.com",
"phone": "+123456789"
},
{
"test": "124",
"name": {
"first": "peter",
"last": "sticer"
},
"email": "peter@gmail.com",
"phone": "+123456789"
}
]
};
var output = data.users.map( s => s.name.first + " " + s.name.last );
console.log(output);你可以使用forEach() ：
var json = {
"users": [
{
"test": "123",
"name": {
"first": "bob",
"last": "roppo"
},
"email": "bob@gmail.com",
"phone": "+123456789"
},
{
"test": "124",
"name": {
"first": "peter",
"last": "sticer"
},
"email": "peter@gmail.com",
"phone": "+123456789"
}
]
}
var res = [];
json.users.forEach(function(p){
var name = p.name.first + ' ' + p.name.last;
res.push(name);
});
console.log(res);