例如
a = [{id:1,age:10},{id:2,age:20},{id:3,age:30}]
b = [{id:3,sex:'男'},{id:1,sex:'男'},{id:2,sex:'女'}]
合并后
c = [{id:1,age:10,sex:'男'},{id:2,age:20,sex:'女'},{id:3,age:30,sex:'男'}]
var c = [];
a.forEach(function(val) {
b.forEach(function(val2){
if(val.id===val2.id){
c.push({
id:val.id,
age:val.age,
sex:val2.sex
})
}
})
});
console.log(c);
或者
a.map(function(val) {
b.map(function(val2){
if(val.id===val2.id){
return Object.assign(val,val2);
}
})
});
console.log(a);