使用Javascript添加数组元素

Question

首先我是java脚本新手。

我想将变量插入到包含经度和纬度的动态数组中。希望有帮助...

var locations = [ 
    [ test, test1], 
    [ -33.923036, 151.259052], 
    [ -34.028249, 151.157507], 
    [ -33.80010128657071, 151.28747820854187], 
    [-33.950198, 151.259302 ] 
]; 

var test = -33.923036; var test1 = 151.259052;

在此先感谢。

Answer 1

试试这个 -

您必须使用push方法将对象插入到数组中。

var test = -33.923036; var test1 = 151.259052; 
 

 
var locations = [ 
 
    
 
    [ -33.923036, 151.259052], 
 
    [ -34.028249, 151.157507], 
 
    [ -33.80010128657071, 151.28747820854187], 
 
    [-33.950198, 151.259302 ] 
 
]; 
 

 
locations.push([test, test1]) 
 

 
console.log(locations)

Answer 2

您可以使用push方法在数组中添加新元素。

var newValues = [test,test1]; 
locations.push(newValues); 

Answer 3

试试这个locations.push([variable_name_1,variable_name_2])

Answer 4

你必须locations之前声明test和test1：

var test = 1, test1 = 2; 
 

 
var locations = [ 
 
    [ test, test1], 
 
    [ -33.923036, 151.259052], 
 
    [ -34.028249, 151.157507], 
 
    [ -33.80010128657071, 151.28747820854187], 
 
    [-33.950198, 151.259302 ] 
 
]; 
 

 
console.log(locations);

Answer 5

var test = -33.923036; var test1 = 151.259052; 
var locations = [ 
[ test, test1], 
[ -33.923036, 151.259052], 
[ -34.028249, 151.157507], 
[ -33.80010128657071, 151.28747820854187], 
[-33.950198, 151.259302 ] 
]; 

或

var locations = [ 
[ -33.923036, 151.259052], 
[ -34.028249, 151.157507], 
[ -33.80010128657071, 151.28747820854187], 
[-33.950198, 151.259302 ] 
]; 

locations.push([-33.923036,151.259052]) 

或

var test = -33.923036; var test1 = 151.259052; 

locations.push([test,test1]) 
console.log(locations); 

Answer 6

首先声明你的变量

var test = -33.923036; var test1 = 151.259052; 

然后进行推

locations.push([test,test1]); 

Answer 7

对于一些价值的动态插入，你可以在阵列中把它包起来，你需要像以前访问。

如果更改loc的内部值，则同样会得到loations中的实际值，因为您在loc和locations[0]之间有一个参考。

只要不用locations[0]覆盖locations[0]，使用新的数组或原始值，就可以访问实际值loc。

var loc = [ 
 
     -33.923036, 
 
     151.259052 
 
    ], 
 
    locations = [ 
 
     loc, 
 
     [-33.923036, 151.259052], 
 
     [-34.028249, 151.157507], 
 
     [-33.80010128657071, 151.28747820854187], 
 
     [-33.950198, 151.259302 ] 
 
    ]; 
 

 
console.log(locations[0][0]); // -33.923036 
 
loc[0] = 42; 
 
console.log(locations[0][0]); // 42 
 
locations[0][0] = -10; 
 
console.log(locations[0][0]); // -10 
 
console.log(loc);    // [-10, 151.259052]