Dynamically assign unique id from var value in Javascript, jquery

Question

In my program, I use javascript to generate a table which is then appended to the html document:

var html = "<table>";
for (var r = 0; r < rows; r++)
{
    html += "<tr>";
    for (var c = 0; c < cols; c++)
    {
        html += "<td class=\"covered\"><input type=\"image\" src=\"imageURL.com"/></td>";
    }
    html += "</tr>";
}

html += "</table>";
$(".gameboard").append(html);

I want each of the input elements to have a unique ID -- specifically a number. I was hoping to have a variable that is initialized to 1, which gets incremented each time a TD element is created. The value of this variable would be used as the input element ID. I haven't found any way to do this specifically. Thanks in advance!

Use UserId+indexId to usniquely define the id.

Ashish Ratan
– Ashish Ratan

2014-01-21 07:01:07 +00:00
Commented Jan 21, 2014 at 7:01 — Ashish Ratan
– Ashish Ratan, Commented Jan 21, 2014 at 7:01

Milind Anantwar · Accepted Answer · 2014-01-21 07:07:07Z

1

Try this:

var html = "<table>";
var index=0;

for (var r = 0; r < rows; r++)
{
html += "<tr>";

for (var c = 0; c < cols; c++)
{
    html += "<td class=\"covered\"><input id='img"+(index++)+"' type=\"image\" src=\"imageURL.com"/></td>";
}
html += "</tr>";
}

html += "</table>";
 $(".gameboard").append(html);

edited Jan 21, 2014 at 7:07

answered Jan 21, 2014 at 7:01

Milind Anantwar

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1 Comment

Kevin Ji Over a year ago

This code will still not work... the syntax highlighting is a hint.

Rohan Kumar · Accepted Answer · 2014-01-21 07:20:51Z

0

Try to add a global variable let count and increment it in inner loop, like,

var html = "<table>";
var count=1;// use this variable in inner for loop and increment it by 1
for (var r = 0; r < rows; r++)
{
    html += "<tr>";
    for (var c = 0; c < cols; c++){
        html += "<td class=\"covered\">\
                  <input id='"+(count++)+"' type=\"image\" src=\"imageURL.com\"/>\
                </td>";
    }
    html += "</tr>";
}

html += "</table>";
$(".gameboard").append(html);

edited Jan 21, 2014 at 7:20

answered Jan 21, 2014 at 7:01

Rohan Kumar

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Comments

Felix · Accepted Answer · 2014-01-21 07:01:47Z

0

Try this code:

html += "<td id='td-" + c +"'class=\"covered\"><input value='td-" + c +"' type=\"image\" src=\"imageURL.com"/></td>";

answered Jan 21, 2014 at 7:01

Felix

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Comments

Dibu · Accepted Answer · 2014-01-21 07:02:14Z

0

use this

 var ID= new Date().getTime();

answered Jan 21, 2014 at 7:02

Dibu

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