该函数似乎不能删除包含指定值的
相应的HTML代码如下:
节点
,除非它是第一个值(在这种情况下是“apples”)。同时需要循环两次才能执行任何删除。为什么会这样呢?function removeSpec()
{
var query = document.getElementById('spec').value; /* Value inputted by user */
elements = document.getElementsByClassName('fruit'); /* Get the li elements in the list */
var myList = document.getElementById("myList3"); /* Var to reference the list */
var length = (document.getElementsByClassName('fruit').length); /* # of li elements */
var checker = 'false'; /* boolean-ish value to determine if value was found */
for(var counter = 0; counter < length; counter ++)
{
if (elements[counter].textContent == query )
{
alert("Counter : " + counter);
myList.removeChild(myList.childNodes[ (counter) ]);
checker="true";
}
}
if ( checker == "false")
{
alert("Not Found");
}
}
相应的HTML代码如下:
<ul id="myList3">
<li class="fruit" >Apples</li>
<li class="fruit" >Oranges</li>
<li class="fruit" >Banannas</li>
<li class="fruit">Strawberry</li>
</ul>
<form>
Value: <input type="text" name="" value="" id="spec">
<br><br>
</form>
<button type="button" style="height:20px;width:200px" href="javascript:void(0)" onclick="removeSpec()" >
Remove Specified
</button>