我只希望在文本框中输入数字（我只希望使用输入ID或类）

Question

This is my input field, I want right aj query code for only numeric keyword type in this field. if user type string then can't do this .

<input type="tel" name="jobapp_phone" class="sjb-form-control sjb-phone-number sjb-required" id="jobapp_phone" required="required" autocomplete="off" placeholder="099876 54321">

Answer 1

干得好

  <input type="number" name="quantity" min="1" max="5">

Answer 2

check this it allows only numbers in the text field

 $(function() { $('#main').on('keydown', '#onlyNumbers', function(e){-1!==$.inArray(e.keyCode,[46,8,9,27,13,110,190])||/65|67|86|88/.test(e.keyCode)&&(!0===e.ctrlKey||!0===e.metaKey)||35<=e.keyCode&&40>=e.keyCode||(e.shiftKey||48>e.keyCode||57<e.keyCode)&&(96>e.keyCode||105<e.keyCode)&&e.preventDefault()}); }) 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> <div id="main"> <input id="onlyNumbers" type="text" /> </div>