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Я пытаюсь определить, есть ли значение, выбранное в поле выбора нескольких элементов. Мой HTML, какjQuery не работает с multiselect
<select id="courses_c" name="courses_c[]" multiple="true" size="6" style="width:150" title="" tabindex="0">
<option label="" value=""></option>
<option label="Diploma of Beauty Therapy - In Class Mode" value="DBTCM" selected="selected">Diploma of Beauty Therapy - In Class Mode</option>
<option label="Diploma of Beauty Therapy - Flexible Delivery" value="DBTFD">Diploma of Beauty Therapy - Flexible Delivery</option>
<option label="Advanced Diploma" value="Advanced_Diploma">Advanced Diploma</option>
<option label="Certificate II in Retail Make-Up and Skin Care" value="CRMS">Certificate II in Retail Make-Up and Skin Care</option>
<option label="Certificate II in Nail Technology" value="CNT">Certificate II in Nail Technology</option>
<option label="Cosmetic Tanning" value="CT">Cosmetic Tanning</option>
<option label="Spray Tanning" value="Spray_Tanning">Spray Tanning</option>
<option label="Design and Apply Makeup Short Course" value="DAMS">Design and Apply Makeup Short Course</option>
<option label="Acrylic and Gels Short Course" value="AGSC">Acrylic and Gels Short Course</option>
<option label="Airbrush Makeup Short Course" value="AMSC">Airbrush Makeup Short Course</option>
<option label="Certificate III in Beauty Services" value="C3BS">Certificate III in Beauty Services</option>
<option label="Certificate IV in Beauty Therapy" value="C4BT">Certificate IV in Beauty Therapy</option>
<option label="Other Short Course" value="OSC">Other Short Course</option>
</select>
<br/>
<br/>
<input type="text" id="primary_course_of_interest_c" />
и мой JQuery, как
$("#courses_c").click(function(){
var maincourse = $(this).val();
if(maincourse.contains("DBTCM")) {
alert("found");
}
else {
alert("not found");
}
});
Не уверен, почему это contains
функция не работает для меня.
Поскольку 'String.prototype.contains' не является функцией. Возможно, вы ищете [включает] (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes), или, возможно, более старый [indexOf] (https: // developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/indexOf) – CodingIntrigue
Вы можете использовать функцию 'String.prototype.indexOf', такую как' maincourse.indexOf ("DBTCM")> -1' – Satpal