CODEWITHSUNDEEP
javascriptjqueryajax
Crazy
Crazy

Reputation: 867

How to clear the array index using jquery?

var items=[];

items.push(data);

I am using an array to store my data, and then submit using ajax. For the first time submission, it works fine. But when submit subsequently, it will submit null value together with data passing to server.

I am using the method below to clear the array, but i found that the previous data just set to null. For example, for the first time i passed value 1, successful. For the second submission, i clear the array and store new value, e.g. i pushed value 2 to the items[], when submit it will submit null and 2. 

items.splice(0);

How can i fix it? I need to reset the array every time submit the value.

Code:

var items=[];
$("#selection").click(function(e) {
       $(":checkbox").each(function() {
            if(this.checked === false) {
                this.checked = true;
                items.push(this.id);
            }
        });
});

$('#grid').submit(function(e){
            e.preventDefault();
            var formdata = {
                data:items
            };
            $.ajax({
                type: "POST",
                url: "/add",
                data: formdata ,
                dataType:'html',
                success: function(data) {
                    alert("added");
                }
            });
        });

Upvotes: 0

Views: 4698

Answers (2)

madalinivascu
madalinivascu

Reputation: 32354

You simply set the array to a empty array after the ajax

success: function(data) {
    alert("added");
    items=[];
}

or better empty it at each click

$("#selection").click(function(e) {
items=[];
// rest of the code

Upvotes: 2

Juorder Gonzalez
Juorder Gonzalez

Reputation: 1652

If you want to reset all array till leave it empty you can do this :

var array = [1,2,3,4,5,6];
array.length = 0;

it that way you can reset your array

Updated

when you use :

array.splice(0) // this will delete items from index that you passed, only if you passed the first parameters

Hope it helps you.

Thank you for the note @nnnnnn

Upvotes: 0

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