Method of using cryptographic equipment by JAVASCRIPT

The invention relates to a Method of using cryptographic equipment by JAVASCRIPT. The method comprises the following steps: step 1) of accessing the HTTPS (Hyper Text Transfer Protocol) service of the cryptographic equipment by the applied WEB page JavaScript script through an SRC (Source) attribute of a tag by an HTTPS protocol, and putting the parameter data into an URL (Uniform Resource Locator) link; step 2) of requiring a caller to verify the identity after acquiring the parameters in the URL required by the HTTPS by the HTTPS service of the cryptographic equipment, after the identity verification is passed, operating the cryptographic equipment according to the parameters; step 3) of returning an operating result of the cryptographic equipment by means of balling back a JavaScript function in the WEB page after the operation is finished; acquiring the operating result in the JavaScript callback function by the applied WEB page, and then processing the operating result according to an own business process. The method of using the cryptographic equipment by JAVASCRIPT provided by the invention has the advantages of being free from a browser plug-in, cross-platform, flexible in deployment, high in security, convenient, supporting very long data and saving cost and the like.