使用Javascript添加數組元素

Question

首先我是java腳本新手。

我想將變量插入到包含經度和緯度的動態數組中。希望有幫助...

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;

在此先感謝。

Answer 1

試試這個 -

您必須使用push方法將對象插入到數組中。

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方法在數組中添加新元素。

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

Answer 3

試試這個locations.push([variable_name_1,variable_name_2])

Answer 4

你必須locations之前聲明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

首先聲明你的變量

var test = -33.923036; var test1 = 151.259052; 

然後進行推

locations.push([test,test1]); 

Answer 7

對於一些價值的動態插入，你可以在陣列中把它包起來，你需要像以前訪問。

如果更改loc的內部值，則同樣會得到loations中的實際值，因爲您在loc和locations[0]之間有一個參考。

只要不用locations[0]覆蓋locations[0]，使用新的數組或原始值，就可以訪問實際值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]