17 lines
460 B
JavaScript
17 lines
460 B
JavaScript
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/**
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* Thumbnail Helper
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* @description Get the thumbnail url from a post
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* @example
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* <%- thumbnail(post) %>
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*/
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hexo.extend.helper.register('thumbnail', function (post) {
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var url = post.thumbnail || '';
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if (!url) {
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var imgPattern = /\<img\s.*?\s?src\s*=\s*['|"]?([^\s'"]+).*?\>/ig;
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var result = imgPattern.exec(post.content);
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if (result && result.length > 1) {
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url = result[1];
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}
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}
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return url;
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});
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