选择选项更改以触发其他代码

时间:2013-10-31 15:20:47

标签: onchange html-select jquery-selectbox

好的,我正在尝试编写一个脚本,根据用户选择显示和隐藏项目。我能够弄清楚如何使用无线电组这样做,但是当涉及到一个选择项目时,我无法弄明白。任何人都知道我在这里做错了什么?

我的jQuery

 $('select#contact').change(function() {
    var isPhone = $('#phone').is(':selected');
    var isEmail = $('#email').is(':selected');
    $('#cell').toggleClass('req', isPhone);

    if ( isPhone === true ) {
        $('#phoneNum').animate({'height':'show'}, 500);
    } else if ( isPhone === false ){
        $('#phoneNum').animate({'height':'hide'}, 200);
    }
    $('#Remail').toggleClass('req', isEmail);

    if ( isEmail === true ) {
        $('#emailAdd').animate({'height':'show'}, 500);
    } else if ( isEmail === false ){
        $('#emailAdd').animate({'height':'hide'}, 200);
    }
});

我的HTML

<p>
     <label for="contact">How Would You Like Us To Contact You?</label> 
     <select id="contact" name="contact" class="req">
        <option></option>
        <option id="phone">By Phone</option>
        <option id="email">By Email</option>
     </select>
</p>
<p id="phoneNum">
    <label for="cell">Best Phone Number</label>
    <input id="cell" name="cell" type="tel" placeholder="e.g. 555-555-5555" class=""/>
</p>
<p id="emailAdd">
    <label for="Remail">Email</label>
    <input id="Remail" name="Remail" placeholder="something@something.com" type="email" class=""/>
</p>

1 个答案:

答案 0 :(得分:0)

想出来:

    $('select#contact').change(function() {
    var isPhone = $(this).find("option:selected").is('#phone');
    var isEmail = $(this).find("option:selected").is('#email');
    $('#cell').toggleClass('req', isPhone);

    if ( isPhone === true ) {
        $('#phoneNum').animate({'height':'show'}, 500);
    } else if ( isPhone === false ){
        $('#phoneNum').animate({'height':'hide'}, 200);
    }
    $('#Remail').toggleClass('req', isEmail);

    if ( isEmail === true ) {
        $('#emailAdd').animate({'height':'show'}, 500);
    } else if ( isEmail === false ){
        $('#emailAdd').animate({'height':'hide'}, 200);
    }
});