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<script src="//code.jquery.com/jquery-1.11.1.min.js"></script><button id="button">test</button><input id="input1" type="text" value="" /><span style="display:none" class="error">please fill in form</span>$(function() { $('#button').click(function() { var emptyTextBoxes = $('input:text').filter(function() { return this.value === ""; }); var string = "The blank textbox ids are - \n"; emptyTextBoxes.each(function() { string += "\n" + this.id; }); $(".error").show(); });});
Output
300px
300px
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