如何根据下拉选择更改span的内容 - How to change content of a span based on a drop down selection

How to change content of a span based on a drop down selection

本文关键字：span 选择何根 | 更新日期: 2023-09-27

我有以下代码。当用户点击"添加另一项运动"时，kpsport1将根据用户点击的次数增加到2,3,4等。
此外，当他们选择一项运动时，我希望"选择你的运动"(formSectionHeader)被他们选择的运动所取代。尽管在JS部分工作了几天，但仍然存在重大问题。感谢您的建议!非常感谢!!

<div id="copy">
    <div id="personalInfo">
                <h1>Sporting Experience</h1>
                <form action="" name="signUp-pg1" id="signUp-pg1">
                    <div class="singleSportWrap">
                        <h2 class="formSectionHeader"><strong>CHOOSE YOUR SPORT</strong> <span>you can add another sport later.</span></h2>
                      <div class="singleSport">
                     <div id="KPspecialityPosition" class="formSection">
                         <div id="sportSelectField" class="selectStyled">
                              <select class="longField styled KPsportSelecter" name="KPsport1" id="KPsport1">
                                 <option value="default">Sport</option>
                                 <option value="basketball">Basketball</option>
                                 <option value="soccer">Soccer</option>
                                 <option value="football">Football</option>
                                 <option value="baseball">Baseball</option>
                                 <option value="hockey">Hockey</option>
                             </select>
                             <div class="checkboxInput"><input type="checkbox" name="primarySport" value="primarySport"><span>This my primary sport</span></div>
                         </div><!-- //selectStyled -->

                                             </div><!-- //formSection -->
                 </div><!-- //singleSport -->
                 </div><!-- //singleSportWrap -->

                 <p id="addAnotherSport" class="addMoreBtn">Add Another Sport</p>
                 <div id="formStepControls">
                     <a id="saveForm">Save for Later</a>
                     <a href="sign-up-3.php" id="proceedForm">Proceed to Vouching</a>
                 </div><!-- //formStepControls -->
             </form>

    </div><!-- personal info -->
</div><!-- copy -->

这里有一些JavaScript应该做你所要求的(或者至少我如何解释你所要求的):

document.getElementById("addAnotherSport").onclick = function () {
    var kps = document.getElementById("KPsport1");
    var i = kps.selectedIndex;
    i++;
    if (i >= kps.options.length) i = kps.options.length - 1;
    kps.selectedIndex = i;
    document.getElementsByTagName("strong")[0].innerHTML = kps.options[kps.selectedIndex].text;
}
document.getElementById("KPsport1").onchange = function () {
    document.getElementsByTagName("strong")[0].innerHTML = this.options[this.selectedIndex].text;
}

如果你把这个添加到页面底部的脚本标签，就在结束正文标签之前，它应该工作。