Principle solution of online customer service system

The principle of online customer service system
How is online chat done?
What does it do to generate JS code and embed it on a Web page?
Have you ever done something about the principle of these two parts


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Simple online customer Service principle there is no content, just a few steps
First step, register the user (create an ID in the array library)
The second step, generate call JS (at least to give the user a click of the button is not?) ）
Third, create a temporary library of chat content (click the button, follow the link to get the user ID, to create a recognizable temporary library, of course, if the user is not online can be changed to leave a message)
Fourth step, show record (often speaking Ajax timed request server, show chat record in temporary library)
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Simple analysis.
First you need to determine the user's cookie (you can give him an anonymous permission, no user name and password), if the cookie does not have a value, first give the value and then call that JS, out of your online customer service page as to how this page to customer service and user communication that more has not been carefully studied.
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Explore
Simple analysis.
First you need to determine the user's cookie (you can give him an anonymous permission, no user name and password), if the cookie does not have a value, first give the value and then call that JS, out of your online customer service page as to how this page to customer service and user communication that more has not been carefully studied.

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Learn
Access points
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Learn, for a moment,
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Learning, the next point
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Learn a bit

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