I want to create Object-type array，for loop only push last value??
var arr=[];
var k={};
k.num=0;
k.name='';
a=[1,2,3,4];
b=['tom','sun','bob','kiki'];
for(i=0;i<4;i++)
{
k.num=a[i];
k.name=b[i];
arr.push(k)
}
console.log(arr)
//result [{name:'kiki',num:4},{name:'kiki',num:4},{name:'kiki',num:4},{name:'kiki',num:4}]result:
Added via comments in code
var arr = [];
// removed object declaration
// removed initialization
a = [1, 2, 3, 4];
b = ['tom', 'sun', 'bob', 'kiki'];
for (var i = 0; i < 4; i++) {
// initialize new object
var k = {};
// set properties
k.num = a[i];
k.name = b[i];
arr.push(k)
}
console.log(arr)
//result [{name:'kiki',num:4},{name:'kiki',num:4},{name:'kiki',num:4},{name:'kiki',num:4}]var arr = [];
a = [1, 2, 3, 4];
b = ['tom', 'sun', 'bob', 'kiki'];
for (var i = 0, length = a.length; i < length; i++) {
arr.push({num: a[i], name: b[i]})
}
console.log(arr)
//result [{name:'kiki',num:4},{name:'kiki',num:4},{name:'kiki',num:4},{name:'kiki',num:4}]