4. JavaScript
• It's a real programming language!
• Brendan Eich at Netscape invented it
• Web only language - never was
• Often not learned, just used
• ECMAScript5, ECMAScript.next
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5. Take a guess!
What is JavaScript?
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26. var o = new Object();
vs.
var o = {};
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27. var s = new String();
vs.
var s = "";
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28. var x = "" + y;
x.toLowerCase();
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29. "By reducing your global footprint to a single
name, you significantly reduce the chance of bad
interactions with other applications, widgets, or
libraries."
Douglas Crockford
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31. var node = byId("someEl");
node._value = 42;
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32. var str = s1 + s2 + s3;
vs.
var str = [s1, s2, s3].join("");
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33. var C = function(name){
this.name = name;
};
C.prototype.say = function(){
console.log(this.name);
};
var obj = new C("Dave");
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