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当我单击提交时，我收到一条错误消息，指出值在我用来验证表单的 aForm.propertyid 的 javascript 中未定义。

我认为这与使用 select 并尝试验证选择了一个值有关，因为我之前没有针对 select 进行验证，而我的其他表单都可以正常工作。

正确的值在lease_edita 的$_POST 中，但是checkForm(this) 似乎没有将任何内容传递给javascript 进行验证——我的checkForm(aValue) 没有得到aValue。

我在我的 checkForm 中添加了一个警报来显示错误检查的值，但它没有得到一个值。onchange="checkProperty(this.value);" 虽然工作正常并且确实获得了价值。

propertyid 未定义 @/lease_jsLibrary.js

我希望我发布了足够的代码......我已经为此工作了 2 天，但没有找到解决方案，并希望提出建议或想法。

表格： 

<form name ="addEditLeaseForm" id="addEditLeaseForm" action="lease_edita.php" method="post" onsubmit="return checkForm(this)">
<?php
$output = <<<HTML
    <table class="center1" width="500">
        <tr>
            <td style="text-align: right; ">
            Property:
            </td>
            <td>
            <select name="propertyid" id="propertyid" stle="width:270px;" onchange="checkProperty(this.value);" />
                <option value='' selected></option>
HTML;
                $propList = getPropertyList();  // get the properties to populate the list box
                foreach ($propList as $aProperty) {
                extract($aProperty);
                $output .= <<<HTML
                <option value="$idproperty"
HTML;
                if ($idproperty == $prop_id) {
                $output .= <<<HTML
 selected
HTML;
            }
                $output .= <<<HTML
>$address</option>
HTML;
            }
                $output .= <<< HTML
            </select>
            <font id="propertyErr" style="visibility: hidden; color:red; font-weight: bold;">*Required</font>

            </td>
        </tr>
HTML;
    echo $output;
?>
    <tr>
    <td colspan ="2" align="center">
         <input type="submit" value="<?php echo $buttontext ?>" />
        <input type="button" name="Cancel" value="Cancel" onClick="history.go(-1);return true;" />
        </td>
    </tr>

    </table>
</form>

<p style="text-align: center">
    <input type="button" name="Property" value="Back to Property" onclick="window.location = '../property/property_main.php' " />
</p>

Lease_jsLibrary.js 内容：

function trim(strToTrim) {
    "use strict";
    //create a regular expression literal to identify leading and trailing spaces
    var reg = /^\s+|\s+$/g;
    //use the string method - replace - to remove leading and trailing spaces
    return strToTrim.replace(reg,"");
}

// checks whether an input control is empty (i.e., the user failed to enter a required input)
// note: it uses the trim method (see above) to eliminate white spaces before checking the input
function isEmpty(aControl) {
    return (trim(aControl.value).length == 0) ? true : false;
}

// checks for invalid characters in a string
function hasInvalidChars(aControl) {
    //create a regular expression literal to identify invalid characters
    var reg = /[^a-zA-Z0-9\s\&\!\?\.',_-]/;
    //use the regular expression method - test - to check whether the string contains invalid characters
    return reg.test(trim(aControl.value));
}

// removes starting and trailing white spaces
function trimBlur(strToTrim) {
    "use strict";
    //create a regular expression literal to identify leading and trailing spaces
    var reg = /^\s+|\s+$/g;
    //use the string method - replace - to remove leading and trailing spaces
    return strToTrim.replace(reg, "");
}

// checks whether an input control is empty (i.e., the user failed to enter a required input)
// note: it uses the trim method (see above) to eliminate white spaces before checking the input
function isEmptyBlur(aControl) {
    "use strict";
    return (trimBlur(aControl).length === 0) ? true : false;
}

function checkProperty(aValue) {
    "use strict";
alert(aValue);
    if (isEmptyBlur(aValue)) {
    document.getElementById("propertyErr").style.visibility='visible';
    document.getElementById("propertyid").style.borderColor='#FF3300';
    document.getElementById("propertyErr").innerHTML="*Required";
    return false;
    } else {
    document.getElementById("propertyErr").style.visibility='hidden';
    document.getElementById("propertyid").style.borderColor='';
    return true;
    }
}

function checkForm(aValue) {
    alert (aValue.propertyid);
    if (isEmpty(aValue.propertyid)) {
    document.getElementById("propertyErr").style.visibility='visible';
    document.getElementById("propertyid").style.borderColor='#FF3300';
    document.getElementById("propertyErr").innerHTML="*Required";
    return false;
    } else return true;
}

提前感谢您的提示、建议和想法。

通过更改为使用来解决此问题： if (isEmpty(aValue.propertyid.value)) 谢谢！

4

1 回答 1

0

你想检查<select>名为“propertyid”的标签吗？

function checkForm(aForm) {
    if ( !aForm.propertyid.value  ) { // so replace the line with this
        document.getElementById("propertyErr").style.visibility='visible';
        document.getElementById("propertyid").style.borderColor='#FF3300';
        document.getElementById("propertyErr").innerHTML="*Required";
        return false;
    } else {
        console.log( "submited" );
        return false;
    }
}
于 2012-04-19T05:00:06.387 回答