有没有一种简单的方法可以在JavaScript中获取一个html字符串并去掉html?
当前回答
下面的代码允许您保留一些html标记,同时剥离所有其他标记
function strip_tags(input, allowed) {
allowed = (((allowed || '') + '')
.toLowerCase()
.match(/<[a-z][a-z0-9]*>/g) || [])
.join(''); // making sure the allowed arg is a string containing only tags in lowercase (<a><b><c>)
var tags = /<\/?([a-z][a-z0-9]*)\b[^>]*>/gi,
commentsAndPhpTags = /<!--[\s\S]*?-->|<\?(?:php)?[\s\S]*?\?>/gi;
return input.replace(commentsAndPhpTags, '')
.replace(tags, function($0, $1) {
return allowed.indexOf('<' + $1.toLowerCase() + '>') > -1 ? $0 : '';
});
}
其他回答
简单的2行jquery去掉html。
var content = "<p>checking the html source </p><p>
</p><p>with </p><p>all</p><p>the html </p><p>content</p>";
var text = $(content).text();//It gets you the plain text
console.log(text);//check the data in your console
cj("#text_area_id").val(text);//set your content to text area using text_area_id
function strip_html_tags(str)
{
if ((str===null) || (str===''))
return false;
else
str = str.toString();
return str.replace(/<[^>]*>/g, '');
}
我只需要去掉<a>标签,并用链接的文本替换它们。
这似乎很有效。
htmlContent= htmlContent.replace(/<a.*href="(.*?)">/g, '');
htmlContent= htmlContent.replace(/<\/a>/g, '');
const getTextFromHtml = (t) =>
t
?.split('>')
?.map((i) => i.split('<')[0])
.filter((i) => !i.includes('=') && i.trim())
.join('');
const test = '<p>This <strong>one</strong> <em>time</em>,</p><br /><blockquote>I went to</blockquote><ul><li>band <a href="https://workingclasshistory.com" rel="noopener noreferrer" target="_blank">camp</a>…</li></ul><p>I edited this as a reviewer just to double check</p>'
getTextFromHtml(test)
// 'This onetime,I went toband camp…I edited this as a reviewer just to double check'
另一个公认不如nickf或Shog9优雅的解决方案是从<body>标记开始递归遍历DOM并附加每个文本节点。
var bodyContent = document.getElementsByTagName('body')[0];
var result = appendTextNodes(bodyContent);
function appendTextNodes(element) {
var text = '';
// Loop through the childNodes of the passed in element
for (var i = 0, len = element.childNodes.length; i < len; i++) {
// Get a reference to the current child
var node = element.childNodes[i];
// Append the node's value if it's a text node
if (node.nodeType == 3) {
text += node.nodeValue;
}
// Recurse through the node's children, if there are any
if (node.childNodes.length > 0) {
appendTextNodes(node);
}
}
// Return the final result
return text;
}