每次用户在下拉菜单中选择一个选项时,我都希望将卡名Main Title
更改为2nd Title
。
这是我的代码。
HTML:
<h3 id="title" class="card-title">Main Title <span class="badge badge-primary" id="counts">0</span>
<span class="float-right">
<a href="" style="color: #c0c6cc;"><i
class="mdi mdi-trash-can"></i>
</a>
</span>
</h3>
<select class="form-control" id="select" onchange="optionCheck(this);" required>
<option value="yor1" Option 1 </option>
<option value="yor2">
Option 2</option>
<option value="yor3">
Option 3</option>
</select>
如果用户选择选项3,则卡的标题将更改。
JS:
function optionCheck(that) {
if (that.value == "yor3") {
alert("Title changed!");
document.getElementById("title").innerHTML = "2nd Title";
} else {
document.getElementById("title").innerHTML = "Main title";
}
}
现在的问题是,如果我选择Option1或Option2,则只有主标题单词可以看到跨度标记,并且图标消失。
答案 0 :(得分:0)
这是工作代码:https://jsfiddle.net/usmanmunir/c9uqktn3/19/
HTML
<h3 id="title" class="card-title">Main Title</h3>
<span class="badge badge-primary" id="counts">0</span>
<span class="float-right">
<a href="" style="color: #c0c6cc;">
<i class="mdi mdi-trash-can"></i></a>
</span>
<br>
<select class="form-control" id="select" onchange="optionCheck(this);" required>
<option disabled selected></option>
<option value="yor1">Option 1</option>
<option value="yor2">Option 2</option>
<option value="yor3">Option 3</option>
</select>
JS
function optionCheck(that) {
if (that.value === "yor1" || that.value === "yor2" || that.value === "yor3") {
document.getElementById("title").innerHTML = "2nd Title";
} else {
document.getElementById("title").innerHTML = "Main title";
}
}
答案 1 :(得分:0)
您可以将内容放入['A', 10, 1, 'F']
['B', 10, 2, 'F']
['C', 10, 3, 'F']
中,并将该ID span
赋予span标签,以便仅更改span中的内容。
演示代码:
title
function optionCheck(that) {
if (that.value == "yor3") {
alert("Title changed!");
document.getElementById("title").innerHTML = "2nd Title";
} else {
document.getElementById("title").innerHTML = "Main title";
}
}