Question

要获得由我编写以下代码所划分的所有4个字母单词：

＆＃13;

function select() {
    var html = document.getElementById('p').innerHTML;
	var fourLettered = html.match(/[^a-zA-Z|^$][a-zA-Z]{4}[^a-zA-Z|^$]/g) || [];
	document.getElementById('other').innerHTML = fourLettered.join('<br>');
}

＆＃13;

p {
	background-color: #eee;
}

.red {
  color: red;
}

＆＃13;

<p id="p" contenteditable="true">This is <i>a</i> <span class="red">paragraph</span> <b>with</b> lots of markup and-lots-of letters;with?four char</p>
<p id="other"></p>
<button onclick="select()">SELECT</button>

＆＃13;

但是，我无法在p标签的开头或结尾处获得4个字母的单词，即This＆amp;在这种情况下char。

另外标记/跨度＆gt;正在被选中。如何解决这个问题？

Answer 1

试试这个：

＆＃13;

function select() {
    var html = document.getElementById('p').textContent;
	var fourLettered = html.match(/\b[a-zA-Z]{4}\b/g) || [];
	document.getElementById('other').innerHTML = fourLettered.join('<br>');
}

＆＃13;

p {
	background-color: #eee;
}

.red {
  color: red;
}

＆＃13;

<p id="p" contenteditable="true">This is <i>a</i> <span class="red">paragraph</span> <b>with</b> lots of markup and-lots-of letters;with?four char</p>
<p id="other"></p>
<button onclick="select()">SELECT</button>

＆＃13;

获取所有4个字母的单词Regex

1 个答案: