The Multi-selector selects the combined results of all the specified selectors.The matched elements will be in document order.
Only one is reserved for duplicate elements.
$('S1,S2,S3');
S1,S2,S3 are any valid selector,and you can specify any number of them.
In following example,when the user click on the button,
A red border will be added to all elements which match with specified selectors.
example:Select elements using jQuery Multi-selector
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selector $('span') and $('.pink') will match the same element <span class="block blue">block three</span>, Multi-selector keep one only when combining the results.
