Remove string from string jQuery

Question

Ignore my novice knowledge in jQuery. I started to learn recently and I have a challenge in front of me. I have a checkbox with names checkbox_0, checkbox_1 and want to remove "checkbox_" from the strings so that I would use the 0, 1 in my loop to extract the data for that index. Thanks

aData value alerts me the value checkbox_0, checkbox_1 etc. those are the checkboxes selected.

submitButton.on("click", function() {
           $("Table :checked").each(function(e) {
                var iData =Table.fnGetData( this.parentNode);
                // Strip of the checkbox_ from the string
                for(var i=0; i<=iData.length; i++) {
                  aData = iData[i][7];
                }
                alert(aData);
                Table.fnDraw();             
                 
            });
        });

T.J. Crowder · Accepted Answer · 2012-05-14 16:04:37Z

52

This is just a JavaScript, not a jQuery, thing.

To remove the first occurence of the work "checkbox_":

var updatedString = originalString.replace("checkbox_", "");

Or if you know it'll always be in the form "checkbox_n" where n is a digit,

var updatedString = originalString.substring(9);

...which chops the first nine characters off the string.

In either case, you end up with a string. If you want a number, you can use parseInt:

var updatedString = parseInt(originalString.replace("checkbox_", ""), 10);
// or
var updatedString = parseInt(originalString.substring(9), 10);

...or just put a + in front of it to cause an automatic cast (but note that in that case, both decimal and hex strings will be handled):

var updatedString = +originalString.replace("checkbox_", "");
// or
var updatedString = +originalString.substring(9);

Note that I've written updatedString = originalString.blah(...); but of course you can replace your reference, e.g., "originalString = originalString.blah(...);`.

More to explore:

MDN page on String

answered May 14, 2012 at 16:04

T.J. Crowder

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2 Comments

jbduzan Over a year ago

can also do : originalString = originalString.replace('checkbox_','');

user525146 Over a year ago

That was easy and quick thank you verymuch. I have another question though, can I accumulate all the checkboxes that have been selected and then send all those values as a single ajax call instead for each? I have Table.fnDraw() which does single ajax call for the each row selected

rabbidrabbit · Accepted Answer · 2012-05-14 16:06:51Z

3

submitButton.on("click", function() {
           $("Table :checked").each(function(e) {
                var iData =Table.fnGetData( this.parentNode);
                // Strip of the checkbox_ from the string
                for(var i=0; i<=iData.length; i++) {
                  aData = iData[i].replace("checkbox_", "");
                }
                alert(aData);
                Table.fnDraw();             

            });
        });

answered May 14, 2012 at 16:06

rabbidrabbit

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Comments

Ashley Strout · Accepted Answer · 2012-05-14 16:17:10Z

2

To remove the checkbox_ part, you can simply do this:

cbName=cbName.replace("checkbox_", "");

To do this for all your checkboxes inside the .each() loop:

var cbIndex=this.name.replace("checkbox_", "");
//or...
var cbIndex=this.name.split("checkbox_").join("");

edited May 14, 2012 at 16:17

answered May 14, 2012 at 16:05

Ashley Strout

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Comments

gdoron · Accepted Answer · 2012-05-14 16:05:56Z

1

There are many ways to do it, some of them:

$("table :checked").each(function() {
    var theNumber = this.name.replace(/\D/g, "");
    var theNumber = this.name.replace(/[^\d]/g, ""); // or this
    var theNumber = this.name.match(/\d/g).join();   // or this

answered May 14, 2012 at 16:05

gdoron

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