Find all elements on a page whose element ID contains a certain text using jQuery

$('*[id*=mytext]:visible').each(function() {
    $(this).doStuff();
});

Note the asterisk '*' at the beginning of the selector matches all elements.

See the Attribute Contains Selectors, as well as the :visible and :hidden selectors.

This selects all DIVs with an ID containing 'foo' and that are visible

$("div:visible[id*='foo']");

Thanks to both of you. This worked perfectly for me.

$("input[type='text'][id*=" + strID + "]:visible").each(function() {
    this.value=strVal;
});