Basically engaged in the SEO industry companies or individuals, could hang on JavaScript taboo. Although the search engines do not normally go to the implementation of JavaScript code, but search engines have been able to find this technology. JavaScript technology in the SEO, has been controversial. For example, JavaScript redirect technology.

What is Cloaking; Cloakingc known as the Chinese: camouflage. Black Hat SEO from the point of view, it is understood at the same time, as well as for the user to provide different search engines. The main purpose is to deceive the search engine to upgrade the position.

JavaScript redirect on the technology; JavaScript is the use of JavaScript redirects the user will be redirected to another page. As the search engine spiders will not implement the JavaScript code, which has become a black hat SEO search engine to refuse to provide links or the content of spam is an effective deterrent.

The most famous case is that the official website of Germany's BMW was from the Google search engine indexes the entire database of data points.

JavaScript is a redirection of the search engine is extremely sensitive technology, but also GOOGLE has its own Web site administrator to assist in the manual to remind the Web site administrator to carefully redirect the use of JavaScript technology.

IP address redirection; a lot of the company's Web site is a business-oriented country, the national Web site to the needs of customers in the area of business information. As a result, many of the Web site through the IP address on the section of the region to judge and decide which channels to the Web site.

This search engine is sensitive to the restricted area. If a Web site using the technology at the same time, deliberate search for what has been done, it will most likely caused by the search engine penalties.

JavaScript-Link;

Link exchange in the country in the SEO industry is very normal, very popular. However, many of the Web site administrator to clearly link code into JavaScript code can not, because they are worried that such a link code, the search engine was not easy to read.

From the whole, SEO or recommend HTML code, URL paths to make full use of static. But not any site, any case of static URL must be dealt with. However, if you want the Web site in search engines better performance, it should be allowed to become more simple Web site.