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Implementing Mutual Exclusion for AJAX (4 tags)
AJAX programmers who come from the Java world can, or at least should, be concerned with JavaScript's non-support for safely managing data structures in a concurrent fashion. If one thread is changing the DOM while another is reading it, problems are likely. Java developers can attack this with tools from the synchronized keyword and the old Object wait()/release() to the modern java.util.concurrent package introduced in J2SE 5.0. Bruce Wallace addresses the problem by introducing protection for critical blocks of JavaScript code.