Hi! I’m Starx

Question 1

Question by Starx

I have a POST request which receives a JSON String as a result. The fields, the values, or how deep the array is? These all are unknown. So, I need to loop through each of the json value, its index and its value and perform actions based on it.

$.post(
    "test.php", 
    { action: 'someaction', param: '2' },
    function(data) {
      //now data is a json string
      $.each(data, function() {
       key = data.key; //i need to retrieve the key
       value = data.value; //i need to retrieve the value also

       //now below here, I want to perform action, based on the values i got as key and values
      }
    },
    "json"
);

How can i get the values of JSON seperated as key and value?

Answer

Answer by Starx

Starx

Sorry, guys, but I solved it myself. Please dont be angry with me. (I will delete the question if it is required by the community.)

$.post(
    "test.php", 
    { action: 'someaction', param: '2' },
    function(data) {
      //now data is a json string
      $.each(data, function(key,value) {
       alert(key+value);
       //now below here, I want to perform action, based on the values i got as key and values
      }
    },
    "json"
);

Question 2

Question by Sajja

Sajja

I have a HTML button like

<input type="button" id="button" onclick="showSuper()" value="Click Me!" />

Inside JavaScript, I have

var showSuper = function() {
    var btn = document.getElementById('button');
    var spanSuper = "<sup>3</sup>";
    btn.value="You Clicked Me " +  spanSuper;
    //btn.value = "You Clicked Me " + <sup>a</sup>;
}

With the above function the button value is getting replaced with You Clicked Me <sup>3</sup>

I also tried with the comment statement that also didn’t succeed. How can add a superscripted text to the button?

Answer

Answer by Starx

Starx

You do not need script to do this. Use this instead

<button name="button" id="button" onclick="showSuper()">Click Me!</button>

Script

var showSuper = function() {
    var btn = document.getElementById('button');
    var spanSuper = "<sup>3</sup>";
    btn.innerHTML= "You Clicked Me " +  spanSuper;
}

Check Demo. Updated Demo with your solution

Question 3

Question by user679460

user679460

//PHP array   
 $Cashups = array(
    array(
        'cashup_id' => 146456,
        'display_time' => 'Wed 16th Mar, 9:55pm',
        'terminal_name' => 'Bar 1',
        'calculated_cash' => 389.20,
        'actual_cash' => 374.6,
        'calculated_tenders_total' => 1,551.01,
        'actual_tenders_total' => 1,551.01
    ),
    array(
        'cashup_id' => 146457,
        'display_time' => 'Wed 16th Mar, 9:56pm',
        'terminal_name' => 'Bar 2',
        'calculated_cash' => 493.3,
        'actual_cash' => 493.3,
        'calculated_other' => 1509.84,
        'actual_other' => 1509.84
    )
);

HTML

<?php foreach ($Cashups as $Cashup) { ?> 
<tr>
    <td class="Left"><?php echo $Cashup['display_time']; ?></td>
    <td><?php echo $Cashup['terminal_name']; ?></td>
    <td><?php echo number_format($Cashup['calculated_cash'], 2); ?></td>
    <td class="clickchange"><a  href="#"><?php echo number_format($Cashup['actual_cash'], 2); ?></a></td>
    <td><?php echo number_format($Cashup['calculated_other'], 2); ?></td>
    <td><?php echo number_format($Cashup['actual_other'], 2); ?></td>
</tr>
<?php } ?>

Jquery

I am able to input text boxes when clicked on the link(clickchange) with the help of an answer sent by user on stackoverflow.
I can read the values but am not able to read the indexes of the links when clicked. I would like to know how to apply each on function to read the indexes of the link. Once I read the inexes I can then update the td with thier respective values.

Please help. How do I read text?

Answer

Answer by Starx

Starx

I am guessing you want the index when clickChange is clicked.

$("td.clickchange").click(function() {
    var i = $(this).parent("tr").index();
    alert(i);
});

Question 4

Question by Girish Chaudhari

Girish Chaudhari

I am new in Jquery. I have a code for dialog.

$(this.choosePadsContainer).dialog({ 
        title: 'Choose pad locations',
        autoOpen: false,
        modal: true,
        buttons: { "OK": function () {
            //Extract all checked pad locations.
            var checkedPads;
            checkedPads = new Array();
            $(self.padLocationsForActivity + " input:checked").each(function (index, value) {
                checkedPads.push($(value).val());
            });
            //Set selected pad text.
            setSelectedPadText(self.selectedPadsLblIdFormat, $(self.hiddenActivityAreaCode).val(), checkedPads);
            $(this).dialog("close");
        }
        }
    });

I want to give css class to the OK button. How will it be done?

Answer

Answer by Jo-Herman Haugholt

Jo-Herman Haugholt

AFAIK it’s not directly supported, but something this should work:

$(".ui-dialog-buttonset .ui-button", this.choosePadsContainer).addClass("foo");

Answer

Answer by Starx

Starx

I think you can do something like this.

$(window).load(function() {
    $("span[class=ui-button-text]:contains('OK')").each(function() {
          $(this).addClass("myClass");
    });
});

Question 5

Question by Jean

Jean

I want to insert "|" in place of space " " using str_replace, but when I use it

str_replace("|", " ", $word);

All space between the words were deleted. Any help?

— The code

$word=explode(" ",$FromForm);
$word_count - str_word_count($_post['xxx'];
for($i=0;$i<=$word_count;$i++) {
   echo str_replace("|"," ",$word[$i]);
   //it echos fine without the string replace
}

Answer

Answer by Starx

Starx

I think you got the function the wrong way, if you are trying to replace certain text with |, then you have to do something like this.

str_replace(" ","|",$word);

UPDATE

Since you exploded $FromForm by " ", there will be nothing to replace by str_replace later on.

Question 6

Question by homlyn

homlyn

How can I convert this $_GET method to $_POST method?

$linkword .= "n<A HREF="$self?letters=$alpha[$c]$letters&n=$n">$alpha[$c]</A> ";

Answer

Answer by Starx

Starx

Instead of creating a anchor tag. Create a hidden form

~~$linkword .= "n<A HREF="$self?letters=$alpha[$c]$letters&n=$n">$alpha[$c]</A>";~~

Here is a Sample

<form name="hiddenform" method="POST" action="page.php">
   <input type="hidden" name="letters" value="<? echo alpha[$c].$letters; ?>" />
   <input type="hidden" name="n" value="<? echo $n; ?>" />
   <a onclick="document.forms['hiddenform'].submit();">Test Link <? echo $alpha[$c]; ?></a>
</form>

Jsfiddle Demo

Question 7

Question by Alocus

Alocus

I’d like to know which of the followings would execute faster in MySQL database. The table would have 200 – 1000 entries.

  SELECT id 
    from TABLE 
order by id desc
   limit 1

or

SELECT count(id) 
  from TABLE

The story is the Table is cached. So this query is to be executed every time before cache retrieval to determine whether the cache data is invalid by comparing the previous value.

So if there exists a even less expensive query, please kindly let me know. Thanks.

Answer

Answer by RichardTheKiwi

RichardTheKiwi

If you

start from 1
never have any gaps
use the InnoDB engine
id is not nullable

Then the 2nd could run [ever so marginally] faster due to not having to visit table data at all (count is stored in metadata).

Otherwise,

if the table has NO index on ID (causing a SCAN), the 2nd one is faster

Barring both the above

the first one is faster

And if you actually meant to ask SELECT .. LIMIT 1 vs SELECT MAX(id).. then the answer is actually that they are the same for MySQL and most sane DBMS, whether or not there is an index.

Answer

Answer by Starx

Starx

I think, the first query will run faster, as the query is limited to be executed for one row only, 200-1000 may not matter that much in this case.

Question 8

Question by mrN

mrN

I need to extract two seperate information from a string.

For example,

$string = 'int(5)';
//Now I need "int" and the text inside the brackets "5" seperately;
$datatype = ?
$varlength = ?

How to extract those information?

Answer

Answer by Czechnology

Czechnology

Use this regex

^([a-z]+)(([0-9]+))$

if (preg_match('~^([a-z]+)(([0-9]+))$~i', 'int(5)', $matches)) {
  $datatype  = $matches[1]; // int
  $varlength = $matches[2]; // 5
}

EDIT

If you want to match more than just a number in the brackets, expand it as necessary:

^([a-z]+)(([0-9a-zA-Z, ]+))$ // numbers, letters, comma or space
^([a-z]+)(([^)]+))$          // anything but a closing bracket

Answer

Answer by Starx

Starx

In the case. you want to match anything inside the brackets, use this

preg_match('/^([a-z]+)(([a-zA-Z0-9,]+))$/', 'enum(1,a)' , $matches);
print_r($matches);

Question 9

Question by Hacker

Hacker

Possible Duplicate:
Reference – What does this symbol mean in PHP?

Hi,
I was using like

$formCheckbox = $form->addElement('radio',...);
$formCheckbox->setChecked(true);

this was working on windows properly but was not on linux i.e it was not checking the radio button.

so i changed it like

$formCheckbox = **&**$form->addElement('radio',...);
$formCheckbox->setChecked(true);

so i just used & while creating the element. I just wanted to know how does it make a difference. I am using HTML quick forms.

Answer

Answer by sharpner

sharpner

in this case there is not much of a difference, because php handles objects internally as pointers..

but as long as you do not know what & stands for, don’t use it..

a short introduction to pointer:

$a = 10; 
$b = &$a; 
$b = 20; 
echo $a; -> 20 

$a = 10; 
$b = $a; 
$b = 20; 
echo $a; -> 10

so with & you only reference to another variable, instead of creating a new one

Answer

Answer by Starx

Starx

It is passing the variable as a reference, so that the changes are maintained always.

Check this http://php.net/manual/en/language.references.pass.php

Question 10

Question by l2aelba

l2aelba

<table class="Table">
    <thead class="thead">
        <tr class="tr">
            <th class="th header">Done</th>
            <th class="th header">None</th>
            <th class="th header">None</th>
            <th class="th header">Done</th>
            <th class="th header">None</th>

            <tr>
                <td>info</td>
                <td>info</td>
                <td>info</td>
                <td>info</td>
                <td>info</td>
            </tr>
        </tr>
    </thead>
</table>

I want to delete all “None”s cell and all “info” of cells

http://jsfiddle.net/D6e4H/

Any idea ? Thanks

Answer

Answer by Furqan

Furqan

use this

    $(".th:contains('None')") .remove();
    $("td:contains('info')") .remove();

Your jsFiddle has been updated.

Answer

Answer by Starx

Starx

I think you are looking for this

$("th:contains('None')").each(function(index,value) {
    //Grab all the "None" th and their indexes
    $("tr td:nth-child("+$(this).index()+")").remove();
    //remove the td with the same indexes on the next tr
    $(this).remove();
    // now also remove the "None" th
});

Here is your Solution

Hi! I’m Starx

experienced Software Developer. And this is my blog

Blog Page

Looping through Dynamic JSON String

Question by Starx

Answer by Starx

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Question by Sajja

Answer by Starx

reading index value of a table row with many cells and reading the value from it using Jquery

Question by user679460

Answer by Starx

How to give css class to the OK button of dialog in JQuery?

Question by Girish Chaudhari

Answer by Jo-Herman Haugholt

Answer by Starx

str_replace “|” using php

Question by Jean

Answer by Starx

convert this link to POST mode

Question by homlyn

Answer by Starx

Which is a less expensive query count(id) or order by id

Question by Alocus

Answer by RichardTheKiwi

Answer by Starx

Regex Query To seperate and extract two different set from a string?

Question by mrN

Answer by Czechnology

Answer by Starx

difference when using & and not using &

Question by Hacker

Answer by sharpner

Answer by Starx

(jQuery) How to delete all cell from this table?

Question by l2aelba

Answer by Furqan

Answer by Starx

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