php - How to have jQuery detect wether first input is text or not and fire the jQuery if it is text -


i want jquery fire after actual text (not backspace or tab pressed) inputted search bar, not possible search results display database.

function searchq() {     var searchtxt = $("input[name='search']").val();     $.post("search.php",{searchval:searchtxt,}, function(output) {         $("#output").html(output);     }); }

here input:

<input id='input' type="text" name="search" placeholder="search here..." onkeydown="searchq();" autocomplete="off">

just add if condition based off of results of trim:

if(searchtxt.trim() != '') {     // post

trim remove whitespace both ends of string. if tab or space thing in value, result of trim empty string.

as @karl-andré gagnon pointed out in comment, there jquery-specific function can use trim whitespace:

if($.trim(searchtxt) != '') {

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