Early 2000s: Browser Wars push rapid innovation. Firefox and Chrome bring competition.
2009: ECMAScript 5 makes JS more robust. Templating systems like Handlebars appear.
2015: ECMAScript 6 (ES6) adds major improvements like arrow functions and promises.
- ES1 supported in Internet Explorer 4
- ES2: Brings more flair in 1998.
- ES3: Drops in 1999 with new features.
- ES4: Abandoned like a bad haircut in 2008.
- ES5: Makes a comeback in 2009, more stylish than ever.
- Internet Explorer 5 first to support ES2
- Internet Explorer 5.5 first with ES3
- Firefox 1 and Netscape 6 in 2000 used JS 1.5
- Full ES5 support by 2014
- ES6 support by 2017
- ECMA-262 Edition 1 released June 1997
Relationship to Java
- ECMAScript is the standardized version.
- Other languages like JScript and ActionScript based on it.
- Used by over 64.9% of devs.
- Runs over 90% of websites.
- Expanded from scripting into robust general-purpose language.
Reduced Server Load
Ease of Use
With its straightforward syntax, It delivers an easy on-ramp for new developers compared to more complex languages. Less time spent learning means faster product development!
From drag-and-drop to sliders and beyond, It empowers developers to create engaging interfaces that wow users. Take that, boring old HTML forms!
Like a crafty mechanic, It leverages addons like Greasemonkey to inherit extra superpowers. More capabilities without extra coding!
It gets along with all major web browsers, avoiding messy versioning and compatibility issues. Write once, run anywhere!
It reacts in real-time to user events like clicks or scrolls, enabling snappy interfaces without reloading. Hello rich web apps!
With all the code exposed on the client, it’s vulnerable to exploitation through bugs or oversights. Security requires rigorous testing and best practices.
Differences in implementation across browsers can lead to inconsistent behavior and compatibility headaches. Cross-browser testing is critical.
Debugging can be trickier compared to languages like C++ with robust dedicated tools. The debugging process may be less efficient.
UI Rendering Performance
Visible Source Code
It’s client-side nature exposes code to the public, raising concerns around IP protection. Obfuscation provides some mitigation.
Brittle Error Handling
A single error can crash an entire website. Browsers are fault-tolerant, but resilience requires rigorous input validation.
Variation in implementation across browsers requires extra testing and abstraction to smooth over differences.
Complex Large Apps
Building extensive applications in vanilla can become cumbersome without help from frameworks and compilers.
Dynamic Type Conversion
Of course, developers have crafted solutions to mitigate these weaknesses over the years. With sound practices, It remains a cornerstone of modern web development.
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