我正在使用Wordpress,如果标签包含特定文本,我需要替换文本。我对Javascript不太熟悉,所以我希望有人可以帮助我:)。
这是我的html结构:
<tbody>
<tr class="tr1">
<td class="td1">
<a href="http://www.example.com">Name 1</a>
<strong class="quantity">× 1</strong>
</td>
<td class="td2">
<span class="span1">30$</span>
</td>
</tr>
</tbody>
我想要实现的目标是:
我希望我的解释足够清楚。我试图先自己搜索,我发现了一些功能,如getelement和innerHTML,但我没有找到如何将它与我需要的结果相结合。
谢谢!
编辑:我想用特定的href =“http://www.example.com”定位标签A
答案 0 :(得分:3)
您可以使用 querySelector()
, querySelectorAll()
和 closest()
,并执行以下操作< / p>
function changeTxt() {
// get all spans
var ele = document.querySelectorAll('.td2 .span1');
// iterate over the html element collection
for (var i = 0; i < ele.length; i++) {
// parse the text to get number
// if symbol is in starting following will not work
// var text = parseFloat(ele[i].innerHTML, 10);
var text = parseFloat(ele[i].innerHTML.match(/\d+(\.\d+)?/)[0], 10);
// check the value is 30 or 40
if (text == 30 || text == 40) {
// if true then get current tr and get anchor tag and update content
var item = ele[i]
// getting closest ancestor tr
.closest('tr')
// select a tag which have particular attribute value
.querySelector('.tad1 a[href="http://www.example.com"]')
// check item exists and update
if (item) {
item.innerHTML = 'Name 2';
// disabling click event (since disabled attribute will not work)
//item.setAttribute('onClick', "return false;");
//or remove the href attribute
item.removeAttribute('href');
// or
// item.setAttribute('href','#');
}
}
}
}
changeTxt();
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<table>
<tbody>
<tr class="tr1">
<td class="tad1">
<a href="http://www.example.com">Name 1</a>
<strong class="quantity">× 1</strong>
</td>
<td class="td2">
<span class="span1">30.0$</span>
</td>
</tr>
<tr class="tr1">
<td class="tad1">
<a href="http://www.example.com">Name 1</a>
<strong class="quantity">× 1</strong>
</td>
<td class="td2">
<span class="span1">30.1$</span>
</td>
</tr>
<tr class="tr1">
<td class="tad1">
<a href="http://www.example.com">Name 1</a>
<strong class="quantity">× 1</strong>
</td>
<td class="td2">
<span class="span1">20$</span>
</td>
</tr>
<tr class="tr1">
<td class="tad1">
<a href="http://www.example.com">Name 1</a>
<strong class="quantity">× 1</strong>
</td>
<td class="td2">
<span class="span1">£30</span>
</td>
</tr>
<tr class="tr1">
<td class="tad1">
<a href="#">Name 1</a>
<strong class="quantity">× 1</strong>
</td>
<td class="td2">
<span class="span1">30$</span>
</td>
</tr>
</tbody>
</table>