In the ever-evolving technological landscape, the role of JavaScript Developers has grown exponentially. This provides a ripe opportunity for us to delve deep into the sphere of JavaScript Development, unraveling key findings, and providing valuable insights into the industry. It is an attempt to not just understand the industry better but also to set forth a discourse on the complex dynamics of the global developer community.

JavaScript, a high-level, interpreted scripting language, has been an instrumental tool for developers across the world. Its versatility, ubiquity, and ease of use make it the language of choice for web development. However, what truly sets JavaScript apart is its thriving, tight-knit community of developers.

An overview of the JavaScript developers' landscape reveals a fascinating mix of professionals, ranging from full-stack developers, front-end developers, back-end developers, to software engineers. Interestingly, the average JavaScript developer does not fit into a typical age bracket, bringing together a diverse group of individuals from different age groups and skill levels.

JavaScript development isn't confined to a specific geographical location; it is truly global, with burgeoning communities in North America, Europe, and Asia. However, as per the Stack Overflow Developer Survey 2020, the United States leads the pack with a maximum number of JavaScript developers.

When it comes to employment, the majority of JavaScript developers work full time, with independent contracting emerging as a popular choice. This points to an intriguing trend- a shift from traditional, structured employment towards more flexible, project-based engagements. Such a shift could potentially be attributed to the increasing digitization of businesses and the subsequent demand for customized solutions.

A critical part of the discourse is the gender disparity within the industry. Although the number of women in the field is steadily increasing, they still represent a minority in the JavaScript development landscape. The necessity for more inclusive policies and initiatives to encourage diversity in the field is evident and pressing.

In terms of technology, JavaScript developers predominantly favor React.js, with Angular.js and Vue.js following suit. Each of these JavaScript libraries and frameworks has its unique benefits and trade-offs. For instance, React.js offers high flexibility and efficiency but has a comparatively steep learning curve. Angular.js, on the other hand, is excellent for large-scale applications, but its complex syntax can be a hindrance for some. Meanwhile, Vue.js strikes a balance with its simplicity and gradual learning curve, although it may not be as suitable for large-scale applications as Angular.js.

The salary aspect, an often-debated topic, presents a wide array of figures. However, it goes without saying that JavaScript developers, given their crucial role, are well-compensated. Their salaries vary greatly based on factors such as geographical location, level of expertise, and the specific technology they are working with.

However, to get a more comprehensive understanding of the industry, we need to go beyond the realm of tangible factors and explore the intrinsic motivators that drive JavaScript developers. When asked, most developers cite intellectual challenge, problem-solving opportunities, and the joy of creation as the primary motivators.

In conclusion, the field of JavaScript development is a dynamic and evolving entity. Amidst this constant change, one thing remains clear- the JavaScript developer community is a vibrant, diverse, and ever-expanding one, continually pushing the boundaries of innovation and creativity. While we can predict its trajectory based on the current trends, the true future of JavaScript development lies in the hands of its talented developers, who continue to shape it with their groundbreaking work. It is a fascinating field, one that deserves our continuous exploration and understanding.