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Javascript insert

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  Javascript insert Saurabh Khemka <saurabh.khemka4@gmail.com> - 2013-07-15 06:06 -0700
    Re: Javascript insert Andrew Poulos <ap_prog@hotmail.com> - 2013-07-15 23:57 +1000
      Re: Javascript insert "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2013-07-15 16:23 +0200
        Re: Javascript insert Ben Bacarisse <ben.usenet@bsb.me.uk> - 2013-07-15 16:41 +0100
          Re: Javascript insert Denis McMahon <denismfmcmahon@gmail.com> - 2013-07-15 16:17 +0000
            Re: Javascript insert Norman Peelman <npeelman@cfl.rr.com> - 2013-07-15 13:16 -0400
            Re: Javascript insert JJ <duh@nah.meh> - 2013-07-16 01:32 +0700
    Re: Javascript insert Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-07-15 21:15 +0200
      Re: Javascript insert John Harris <niam@jghnorth.org.uk.invalid> - 2013-07-16 16:18 +0100

#20659 — Javascript insert

Hi,

I have a javascript variable say, var a = "hello";.

I want to insert something after say, "aaa" so, that the final string becomes

"heaaallo". Please help.

Regards,
Saurabh

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#20661

On 15/07/2013 11:06 PM, Saurabh Khemka wrote:
> Hi,
>
> I have a javascript variable say, var a = "hello";.
>
> I want to insert something after say, "aaa" so, that the final string becomes
>
> "heaaallo". Please help.

How about
   var a = "hello";
   a = a.split("");
   a.splice(2, 0, "aaa");
   a = a.join("");
?

It will fail if your original string includes a comma.

Andrew Poulos

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#20662

Andrew Poulos wrote on 15 jul 2013 in comp.lang.javascript:

> On 15/07/2013 11:06 PM, Saurabh Khemka wrote:
>> Hi,
>>
>> I have a javascript variable say, var a = "hello";.
>>
>> I want to insert something after say, "aaa" so, that the final string
>> becomes 
>>
>> "heaaallo". Please help.

You should define your Q better,
your example could be met with:

   var a = 'hello';
   a = 'heaaallo';

> How about
>    var a = "hello";
>    a = a.split("");
>    a.splice(2, 0, "aaa");
>    a = a.join("");
> ?
> 
> It will fail if your original string includes a comma.

It will NOT fail.

================================

Shorter is:

   var a = 'hello';
   a = a.replace(/(.{2})/, '$1aaa');




-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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#20664

"Evertjan." <exxjxw.hannivoort@inter.nl.net> writes:

> Andrew Poulos wrote on 15 jul 2013 in comp.lang.javascript:
>
>> On 15/07/2013 11:06 PM, Saurabh Khemka wrote:
>>> Hi,
>>>
>>> I have a javascript variable say, var a = "hello";.
>>>
>>> I want to insert something after say, "aaa" so, that the final string
>>> becomes 
>>>
>>> "heaaallo". Please help.
>
> You should define your Q better,
> your example could be met with:
>
>    var a = 'hello';
>    a = 'heaaallo';

This.  There's lot of ways to do it and the right best way is likely to
depend on things not yet stated.
>
>> How about
>>    var a = "hello";
>>    a = a.split("");
>>    a.splice(2, 0, "aaa");
>>    a = a.join("");
>> ?
>> 
>> It will fail if your original string includes a comma.
>
> It will NOT fail.
>
> ================================
>
> Shorter is:
>
>    var a = 'hello';
>    a = a.replace(/(.{2})/, '$1aaa');

Longer, but probably conceptually simpler, and with fewer special cases
to consider in the replacement string, is:

  a.substring(0, 2) + "aaa" + a.substring(2)

-- 
Ben.

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#20665

On Mon, 15 Jul 2013 16:41:55 +0100, Ben Bacarisse wrote:

> "Evertjan." <exxjxw.hannivoort@inter.nl.net> writes:
> 
>> Andrew Poulos wrote on 15 jul 2013 in comp.lang.javascript:
>>
>>> On 15/07/2013 11:06 PM, Saurabh Khemka wrote:
>>>> Hi,
>>>>
>>>> I have a javascript variable say, var a = "hello";.
>>>>
>>>> I want to insert something after say, "aaa" so, that the final string
>>>> becomes
>>>>
>>>> "heaaallo". Please help.
>>
>> You should define your Q better,
>> your example could be met with:
>>
>>    var a = 'hello';
>>    a = 'heaaallo';
> 
> This.  There's lot of ways to do it and the right best way is likely to
> depend on things not yet stated.
>>
>>> How about
>>>    var a = "hello";
>>>    a = a.split(""); a.splice(2, 0, "aaa");
>>>    a = a.join("");
>>> ?
>>> 
>>> It will fail if your original string includes a comma.
>>
>> It will NOT fail.
>>
>> ================================
>>
>> Shorter is:
>>
>>    var a = 'hello';
>>    a = a.replace(/(.{2})/, '$1aaa');
> 
> Longer, but probably conceptually simpler, and with fewer special cases
> to consider in the replacement string, is:
> 
>   a.substring(0, 2) + "aaa" + a.substring(2)

Purely in the interests of adding variety of solutions to the thread, I'd 
like to add:

String.prototype.insertAfterFirst = function(after,insert){ 
var there = this.indexOf(after);
return this.substring(0,there+1) + insert + this.substring(there+1);
}

var a = 'hello';
a = a.insertAfterFirst("e",'aaa');

-- 
Denis McMahon, denismfmcmahon@gmail.com

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#20666

On 07/15/2013 12:17 PM, Denis McMahon wrote:
> On Mon, 15 Jul 2013 16:41:55 +0100, Ben Bacarisse wrote:
>
>> "Evertjan." <exxjxw.hannivoort@inter.nl.net> writes:
>>
>>> Andrew Poulos wrote on 15 jul 2013 in comp.lang.javascript:
>>>
>>>> On 15/07/2013 11:06 PM, Saurabh Khemka wrote:
>>>>> Hi,
>>>>>
>>>>> I have a javascript variable say, var a = "hello";.
>>>>>
>>>>> I want to insert something after say, "aaa" so, that the final string
>>>>> becomes
>>>>>
>>>>> "heaaallo". Please help.
>>>
>>> You should define your Q better,
>>> your example could be met with:
>>>
>>>     var a = 'hello';
>>>     a = 'heaaallo';
>>
>> This.  There's lot of ways to do it and the right best way is likely to
>> depend on things not yet stated.
>>>
>>>> How about
>>>>     var a = "hello";
>>>>     a = a.split(""); a.splice(2, 0, "aaa");
>>>>     a = a.join("");
>>>> ?
>>>>
>>>> It will fail if your original string includes a comma.
>>>
>>> It will NOT fail.
>>>
>>> ================================
>>>
>>> Shorter is:
>>>
>>>     var a = 'hello';
>>>     a = a.replace(/(.{2})/, '$1aaa');
>>
>> Longer, but probably conceptually simpler, and with fewer special cases
>> to consider in the replacement string, is:
>>
>>    a.substring(0, 2) + "aaa" + a.substring(2)
>
> Purely in the interests of adding variety of solutions to the thread, I'd
> like to add:
>
> String.prototype.insertAfterFirst = function(after,insert){
> var there = this.indexOf(after);
> return this.substring(0,there+1) + insert + this.substring(there+1);
> }
>
> var a = 'hello';
> a = a.insertAfterFirst("e",'aaa');
>

   How about:

a.replace("he","$1aaa");



-- 
Norman
Registered Linux user #461062
AMD64X2 6400+ Ubuntu 10.04 64bit

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#20667

On Mon, 15 Jul 2013 16:17:11 +0000 (UTC), Denis McMahon wrote:
> Purely in the interests of adding variety of solutions to the thread, I'd 
> like to add:
> 
> String.prototype.insertAfterFirst = function(after,insert){ 
> var there = this.indexOf(after);
> return this.substring(0,there+1) + insert + this.substring(there+1);
> }
> 
> var a = 'hello';
> a = a.insertAfterFirst("e",'aaa');

Or...

String.prototype.insert = function(str, index) {
  return this.substr(0, index) + str + this.substr(index);
};
//example
var s = "hello";
var r = s.insert("aaa", 2);
console.log(r);

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#20668

Saurabh Khemka wrote:

> I have a javascript variable say, var a = "hello";.

There is neither “Javascript” nor “javascript”.

<http://PointedEars.de/es-matrix>
 
> I want to insert something after say, "aaa" so, that the final string
> becomes
> 
> "heaaallo". Please help.

Yet another way, likely the one that can be adapted most easily:

  var m = a.match(/^(he)(llo)$/);
  var s = m[1] + "aaa" + m[2];

-- 
PointedEars

Twitter: @PointedEars2
Please do not Cc: me. / Bitte keine Kopien per E-Mail.

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#20680

On Mon, 15 Jul 2013 21:15:12 +0200, Thomas 'PointedEars' Lahn
<PointedEars@web.de> wrote:

>Saurabh Khemka wrote:
>
>> I have a javascript variable say, var a = "hello";.
>
>There is neither “Javascript” nor “javascript”.

If you don't know which languages he is referring to ...


><http://PointedEars.de/es-matrix>
> 
>> I want to insert something after say, "aaa" so, that the final string
>> becomes
>> 
>> "heaaallo". Please help.

>Yet another way, likely the one that can be adapted most easily:
>
>  var m = a.match(/^(he)(llo)$/);
>  var s = m[1] + "aaa" + m[2];

... how can you claim to give an an example of code in any of those
languages ?

  John

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