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Clear text field value in JQuery

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情书的邮戳
情书的邮戳 2020-12-05 12:26

I understand this is an easy question but for some reason this just isn\'t working for me. I have a function that is triggered everytime a drop down menu is changed. Here

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15条回答
  • 梦如初夏
    2020-12-05 12:59

    In simple way, you can use the following code to clear all the text field, textarea, dropdown, radio button, checkbox in a form.

    function reset(){
    $('input[type=text]').val('');  
    $('#textarea').val(''); 
    $('input[type=select]').val('');
    $('input[type=radio]').val('');
    $('input[type=checkbox]').val('');  
}
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  • 无人及你
    2020-12-05 12:59 

        First Name: <input type="text" autocomplete="off" name="input1"/>
    <br/>
    Last Name: <input type="text" autocomplete="off" name="input2"/>
    <br/>
    <input type="submit" value="Submit" />
</form>

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  • 南方客
    2020-12-05 13:00

    Try using this :

    function checkValue(){
  var value = $('#doc_title').val();
  if (value.length > 0) {
        $('#doc_title').val("");
        $('#doc_title').focus();  // To focus the input 
    }
    else{
    //do something
    }
}
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<body>
<input type="text" id="doc_title" value="Sample text"/>
<button onclick="checkValue()">Check Value</button>
</body>

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  • 一整个雨季
    2020-12-05 13:04

    You are comparing doc_val_check with an empty string. You want to assign the empty string to doc_val_check

    so it should be this:

    doc_val_check = "";

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  • 名媛妹妹
    2020-12-05 13:08

    For the most part you just set the .val() method. All of the answers are pretty accurate, just wanted to post my results to anyone who may need to set the value via the client id that gets rendered.

     $('#' + '<%= doc_title.ClientID %>').val(null);
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  • 后悔当初
    2020-12-05 13:11

    Instead of all those:

    $('#doc_title').attr("value", "");
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