jQuery match only part of id from div

Question

I ran into an unusual situation yesterday night.

I need to match only part of id. Let me clear you all with an example

I have few divs like

Answer 1

You can use css selector

try this code

html

css

.red{
    display:block; 
    float:left; 
    width:50px; 
    height:20px; 
    background-color:#FF0000;}
.blue{
    display:block; 
    float:left; 
    width:50px; 
    height:20px; 
    background-color:#0000FF;}

jquery

$('div[id^="sales"]').addClass('red');
$('div[id^="user"]').addClass('blue');

css selector ^= will select div with ID that start with the specified value and add the css style.