[英]Search for Keyword in body
I use an ajax-call to get the html from an external url: 我使用ajax调用从外部URL获取html:
var uriData = $.ajax({ url: 'http://www.example.com', success: function(data) { alert(data); } });
That works fine. 很好 I get an alert with html of an external website.
我收到外部网站的html警报。
Is there a easy way to search for a keyword and count the number of it in the Text or in the headlines of the html-body? 有没有一种简单的方法来搜索关键字并在“文本”或html正文的标题中计算关键字的数量?
I tried it this way: 我这样尝试过:
HTML 的HTML
<input id="url" type="text" name="url">
<input id="keyword" type="text" name="keyword">
SCRIPT 脚本
function keyWords() {
var website = jQuery('#url').val();
var keyword = jQuery('#keyword').val();
jQuery.ajax({ url: website, success: function(data) {
var sumKeyword = data.split(keyword).length - 1;
alert (sumKeyword); }
});
};
But unfortunately he then searches the keyword in the entire HTML. 但不幸的是,他随后在整个HTML中搜索了关键字。 (for eg also in achor text etc.) Finally, I want to get the number of keywords in headlines and in the text (p, span, etc.)
(例如,也用于achor文本等。)最后,我想获取标题和文本中的关键字数(p,span等)。
here's a chunk of code that might inspire you to solve your problem 这是一段可能激发您解决问题的代码
var data='<span id="url" type="text" name="url">test this test</span>';
var message = $('<div/>').append(data).find("span:contains('test')").each(function(){
var sumKeyword = $(this).text().split("test").length - 1;
alert (sumKeyword);
});
You could do this with the match function: 您可以使用match函数执行此操作:
jQuery.ajax({ url: website, success: function(data) {
var body = data.match(/<body>(.*)<\/body>/)[1];
var sumKeyword = body.split(keyword).length - 1;
alert (sumKeyword); }
});
getting the textual out of the boilerplate of an HTML is a common task tackled by multiple external APIs and libraries. 从HTML的样板中提取文本是多个外部API和库解决的常见任务。 You cannot simply get the textual content by checking all the text in a webpage as you will end up with lots of irrelevant advertisements and so on.
您不能简单地通过检查网页中的所有文本来获取文本内容,因为最终会出现许多不相关的广告,依此类推。 Using libraries like Diffbot can identify the title/header and the body and suggest some tags and keywords.
使用Diffbot之类的库可以识别标题/标题和正文,并建议一些标签和关键字。 Afterwards you can do your analysis on the extracted text.
之后,您可以对提取的文本进行分析。
External APIs 外部API
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