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List of all selected checkboxes into a JSON string

Simona Marotto

Thursday 11 October 2018, 20:45

Add class to checkbox

<div id="checkboxList">
    <div><input type="checkbox" value="1" class="myChk"> Value 1</div>
    <div><input type="checkbox" value="2" class="myChk"> Value 2</div>
    <div><input type="checkbox" value="3" class="myChk"> Value 3</div>
    <div><input type="checkbox" value="4" class="myChk"> Value 4</div>
    <div><input type="checkbox" value="5" class="myChk"> Value 5</div>
<div>

<div><input type="checkbox" value="1" class="myChk"> Value 1</div>

<div><input type="checkbox" value="2" class="myChk"> Value 2</div>

<div><input type="checkbox" value="3" class="myChk"> Value 3</div>

<div><input type="checkbox" value="4" class="myChk"> Value 4</div>

<div><input type="checkbox" value="5" class="myChk"> Value 5</div>

<div>

Create a function to return a JSON string

function arrayChk(){ 

    var arrAn = [];  
  
    var m = $('.myChk'); 

    var arrLen = $('.myChk').length; 
      
    for ( var i= 0; i < arrLen ; i++){  
        var  w = m[i];                     
         if (w.checked){  
          arrAn.push( { "myVal" : w.value } );  
          console.log(w.value ); 
        }  
      }   
    
    var myJsonString = JSON.stringify(arrAn);  //convert javascript array to JSON string
    console.log( 'result' + myJsonString);
    
    alert(myJsonString);

    return myJsonString;
  
   }

function arrayChk(){

var arrAn = [];

var m = $('.myChk');

var arrLen = $('.myChk').length;

for ( var i= 0; i < arrLen ; i++){

var w = m[i];

if (w.checked){

arrAn.push( { "myVal" : w.value } );

console.log(w.value );

}

var myJsonString = JSON.stringify(arrAn); //convert javascript array to JSON string

console.log( 'result' + myJsonString);

alert(myJsonString);

return myJsonString;

}

Here an example

https://jsfiddle.net/a3owjh85/1/

Syncronize date time with internet service with Ubuntu 18.04

Ivan Revelli

Sunday 30 September 2018, 17:57

ivan.revelli@synaptica.info

Setting date time daemon and timezone of my locale on my ubuntu 18.04 servers:

Install NTP daemon:

   sudo apt install ntp

1	sudo apt install ntp

Configure your locale time zone by checking the list:

   timedatectl list-timezones

1	timedatectl list-timezones

In my case:

   sudo timedatectl set-timezone Europe/Rome

1	sudo timedatectl set-timezone Europe/Rome

Welcome VR6 @ Synaptica Farm

Ivan Revelli

Wednesday 18 July 2018, 16:47

ivan.revelli@synaptica.info

Welcome to VR6 @ Synaptica Farm

VR6 is a fully customized Dell R740XD dual Xeon performance server for high performance in the KVM Virtualization System.

Higher performance less core (on 18 per processor) more frequency (plus 3Ghz) memory RDIMM ECC 2666GHz … less virtual machine but faster.

Why VR6? Each production server in Synaptica has VR in the name because the name of our first server that implements virtualization was VR “Virtual Runner”.