alt 和 alt="" 一样吗?-前端问题

Is alt the same as alt=quot;quot;?(alt 和 alt= 一样吗?)

本文介绍了alt 和 alt="" 一样吗?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在为我的所有图像添加 alt 属性以提高 SEO/屏幕阅读器性能.

I'm adding alt attributes to all my images to improve SEO/screen reader performance.

根据最佳实践，纯美学图像应该有一个空的 alt 属性 alt="IjwvY29kZT7vvIzku6Xkvr/lsY/luZXpmIXor7vlmajot7Pov4flroPku6wu5oiR5ZyoIFdvcmRQcmVzcyDkuK3lj5HnjrDlroPnoa7lrp7lsIYgPGNvZGU+YWx0PC9jb2RlPiDmt7vliqDliLDov5nkupvml6Dmj4/ov7DnmoTnvo7lrablm77lg4/kuK3vvIzkvYbmsqHmnInmt7vliqAgPGNvZGU+YWx0PQ=="".

Per best practice, images that are purely aesthetic should have an empty alt attribute alt="IjwvY29kZT5zbyBzY3JlZW4gcmVhZGVycyBza2lwIG92ZXIgdGhlbS4gSQ=="m in WordPress and noticed it does add alt to these descriptionless aesthetic images, but not alt="IjwvY29kZT4uPC9wPgo8cCBjbGFzcz0="cn">屏幕阅读器和搜索引擎爬虫读取 alt 是否与 alt="IjwvY29kZT4g55u45ZCM77yM5oiW6ICF5oiR5bqU6K+l6L+b5YWl5bm25Lul57yW56iL5pa55byP5by65Yi2IDxjb2RlPmFsdD0=""?


Does alt get read the same as alt="IjwvY29kZT4gYnkgc2NyZWVuIHJlYWRlcnMgYW5kIHNlYXJjaCBlbmdpbmUgY3Jhd2xlcnMsIG9yIHNob3VsZCBJIGdvIGluIGFuZCBwcm9ncmFtYXRpY2FsbHkgZm9yY2UgYW4gPGNvZGU+YWx0PQ==""?
推荐答案
是的，都一样:https://www.w3.org/TR/html5/syntax.html#attributes-0
空属性语法
只是属性名称.该值隐含为空字符串.
Just the attribute name. The value is implicitly the empty string.
对我来说，这就是说没有值的属性与具有空字符串的值相同.
To me, that says that an attribute with no value is the same as having a value of empty string.
这个的回答也是这么说的.

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