JS并不完全指代JavaScript，主要還是JS的調(diào)用、或iframe框架，直接在首頁中使用JavaScript語句，還是很占網(wǎng)頁體積的，而將代碼寫成JS的文件然后調(diào)用，可以達到內(nèi)容動態(tài)修改的目的，而在SEO中最大的作用是可以有效降低網(wǎng)頁體積，屏蔽廣告、外部鏈接等內(nèi)容，降低對頁面實質(zhì)內(nèi)容的干擾，提高關鍵詞密度，向搜索引擎展示頁面內(nèi)容的核心。

JS not entirely refer to JavaScript, mainly JS call, or iframe frame, directly in the page using JavaScript statements, or the volume is accounted for pages, but the code written in JS file and then call the content of the dynamic changes can be achieved purpose, the largest in the role of SEO can reduce the Wang Ye volume, no ads, external links Neirong, lower right substantive content of the page interference Tigao keyword density, search engines to display the page contents of He Xin.

1、屏蔽廣告內(nèi)容，這一點不需要多解釋，譬如Google廣告，百度廣告等都是JS調(diào)用，而你網(wǎng)站上的其他廣告代碼也可以用JS調(diào)用，特別是包含較多外部鏈接的廣告。

2、屏蔽外部鏈接，有些鏈接作弊者最低級的手段，就是在網(wǎng)站使用JS調(diào)用友情鏈接，這樣便將鏈接展示在了網(wǎng)站首頁上，但是這樣的鏈接并不能傳遞權(quán)重，讓搜索引擎讀取到，如本博下面添加到書簽的代碼即為JS調(diào)用。

3、減少頁面代碼，減少網(wǎng)頁體積，若有大段的代碼且此內(nèi)容并不很重要，就可以使用JS調(diào)用，而且可以讓源碼后面的內(nèi)容相比直接引用代碼先讓搜索引擎看到。例如本博右邊欄頂部的博客訂閱鏈接即為JS調(diào)用。

綜上所述，JS對SEO來說并不是一無是處，只要合理運用，JS同樣會服務于SEO。而相同的功能也可使用iframe框架，只不過JS調(diào)用的方法更加簡便。

1, shielding advertising content, it does not need to explain, such as Google ads, advertising, Baidu is JS call, while the other ads on your site can also use JS code calls, especially with the inclusion of external links to more ads.

2, shielding the external links, some links to the lowest level of the means of cheating, that is, the site links using JS call, This adds the link displayed on the website home page, but this does not pass the link weights, so that search engines read to such as the Bo following code shall be added to the bookmark called JS.

3, reducing the page code, reduce the page size, if a large section of the code and the content is not very important, you can use the JS call, and can be compared to the contents of the source behind the direct reference to the code to let search engines see. For example, Bo right-hand column of this blog subscription link at the top of the JS shall call.

In summary, JS on the SEO is not useless, as long as the rational use of, JS also would serve the SEO. The same functionality can also use the iframe frame, just call the method of JS easier.