Extract a value from an array that is not located at the array's tail using Javascript

Question

Extract a value from an array that is not located at the array's tail using Javascript

In my array pvalue, each number is unique. It contains: 1 2 3 15 20 12 14 18 7 8 (total of 10 numbers).

My goal is to remove the number "15" from the array, resulting in pvalue being: 1 2 3 20 12 14 18 7 8 (now with 9 numbers). How can I achieve this without using the pop() function?

I do not want to target the value at the end of the array. Any suggestions would be appreciated!

EDIT

for(i=0; i<pvalue.length; i++) {
    if(pvalue[i]==param) {
        ind=i;
        break;
    }
}
pvalue.splice(ind, 1);

javascript arrays

Answer 1

Answer №1

To remove the initial element, implement the following:

initial = array.shift();

To eliminate any other element, apply the following:

eliminated = array.splice(INDEX, 1)[0];

Answer 2

To remove the initial element, implement the following:

initial = array.shift();

To eliminate any other element, apply the following:

eliminated = array.splice(INDEX, 1)[0];

Answer 3

Answer №2

If you need to manipulate arrays, the splice method is what you're looking for. Here's an example using http://jsbin.com/oteme3:

var a, b;

a = [1, 2, 3, 15, 20, 12, 14, 18, 7, 8];
display("a.length before = " + a.length);
b = a.splice(3, 1);
display("a.length after = " + a.length);
display("b[0] = " + b[0]);

After running this code, the output will show "a.length before = 10", followed by "a.length after = 9", and then "b[0] = 15". It's important to note that splice returns an array of removed values, making it useful for both removal and insertion operations within an array.

Answer 4

If you need to manipulate arrays, the splice method is what you're looking for. Here's an example using http://jsbin.com/oteme3:

var a, b;

a = [1, 2, 3, 15, 20, 12, 14, 18, 7, 8];
display("a.length before = " + a.length);
b = a.splice(3, 1);
display("a.length after = " + a.length);
display("b[0] = " + b[0]);

After running this code, the output will show "a.length before = 10", followed by "a.length after = 9", and then "b[0] = 15". It's important to note that splice returns an array of removed values, making it useful for both removal and insertion operations within an array.

Extract a value from an array that is not located at the array's tail using Javascript

Answer №1

Answer №2

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