How to get array structure with alert() in JavaScript?
Here is the code to see the array structure using alert() . Here below few techniques
are discussed
Approach 1:
- First take the values in a variable(lets arr).
- Pass the array name in the alert() .
- We can directly use the array name because arrayName automatically converted to arrayName.toString()
Example 1: This example follows the approach discussed above.
<!DOCTYPE HTML>
< html >
< head >
< title >
How to get array structure
with alert() in JavaScript?
</ title >
</ head >
< body style = "text-align:center;" id = "body" >
< h1 style = "color:green;" >
GeeksForGeeks
</ h1 >
< p id = "GFG_UP" style = "font-size: 15px; font-weight: bold;" >
</ p >
< button onclick = "gfg_Run()" >
Click here
</ button >
< script >
var el_up = document.getElementById("GFG_UP");
var arr = [1, 2, 4, 6, 9];
el_up.innerHTML =
"Click on the button to see the array structure using Alert().< br > Array is = "
+ arr;
function gfg_Run() {
alert(arr);
}
</ script >
</ body >
</ html >
|
Output:
-
Before clicking on the button:
-
After clicking on the button:
Approach 2:
- First take the values in a variable(lets arr).
- Pass the array name in the alert() .
- We can use .join() method for our simplicity to see the array elements each in a line.
Example 2: This example follows the approach discussed above.
<!DOCTYPE HTML>
< html >
< head >
< title >
How to get array structure
with alert() in JavaScript?
</ title >
</ head >
< body style = "text-align:center;" id = "body" >
< h1 style = "color:green;" >
GeeksForGeeks
</ h1 >
< p id = "GFG_UP" style = "font-size: 15px; font-weight: bold;" >
</ p >
< button onclick = "gfg_Run()" >
Click here
</ button >
< script >
var el_up = document.getElementById("GFG_UP");
var arr = [1, 2, 4, 6, 9];
el_up.innerHTML =
"Click on the button to see the array structure using Alert().< br > Array is = "
+ arr;
function gfg_Run() {
alert(arr.join('\n'));
}
</ script >
</ body >
</ html >
|
Output:
-
Before clicking on the button:
-
After clicking on the button:
Last Updated :
06 Sep, 2019
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