douhandie6615
douhandie6615
2012-07-13 12:05

如何使用JQuery设置文本HTML输入字段的值?

已采纳

There is a HTML element of type text whose name is fiche_tache_ref. Inside a javascript file (.js) outside of the page's folder I want to set its value according to the value of a listbox selected :

function changerNatureRefTache(nature_tache_id) { // nature_tache_id is from a listbox

    var http_ajax = $('#http_ajax').val();
    var html = $.ajax({
    data: "nature_tache_id="+nature_tache_id ,
    type: "POST",
    url: http_ajax+"referentiel/AjaxTacheChangerNatureTache.php" ,  
    async: false
    }).responseText;

        // here I want to set the value of the field

}

Code of AjaxTacheChangerNatureTache.php is :

<?php
    if (isset($_POST['nature_tache_id'])) {
        define("ROOT_PATH", "../../");
        require_once ROOT_PATH  . 'config.inc.php';
        require_once RP_MODELS  . 'nature_tache.class.php';
        $db     = new DbConn();
        $obj    = new nature_tache($db->getInstance());
        $ret    = $obj->recupererNatureTache($_POST['nature_tache_id']);
        $code   = $ret['nat_code'];
        echo $code;
    }
?>

So how to set the value of the field using JQuery ?

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4条回答

  • dqo58772 dqo58772 9年前

    Use the val() function

    $('#idofinput').val("text you want in the field");
    

    Since you are using name you can do the following

    $('input[name=fiche_tache_ref]').val("text you want in the field");
    

    Since names are not necessarily unique be careful with using the name as a selector. I would generally advise using an id instead.

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  • dongxie2749 dongxie2749 9年前

    you'll get lots of the same answer to this question, because this is kind of the low hanging fruit in the jquery docs.

    $("selector").val("new value");
    

    but one tip I'll give you that will make your php a little cleaner is instead of defining a root path like this:

    define("ROOT_PATH", "../../");
    

    you can set an include path in an .htaccess file using the following code:

    php_value include_path ".:/path/to/your/application"
    

    and then you can require files relative to that path (i.e. require_once('config.inc.php') as opposed to what your essentially doing, which is require_once('../../config.inc.php').

    The .htaccess file should live in the main directory that holds your application.

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  • douwei1930 douwei1930 9年前

    Use the val() function of Jquery.

    $('#IdOfTextbox').val("Some Text");
    

    Further Reference

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  • doushan2811 doushan2811 9年前

    I dont get you correctly but something like this is used to set the value of input element in jquery:-

    $("#elementid").val("myvalue");
    
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