Jadi dalam pembuatan javascript perlu di perhatikan adalah..sintaks javascript..outputnya..inputnya..typedata .string..aritmatik..objek..variabel..statment. dll..
contohnya dibawah:
Javascript operator
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<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Operators</h1>
<p>The + operator concatenates (adds) strings.</p>
<p id="demo"></p>
<script>
var txt1 = "What a very";
var txt2 = "nice day";
document.getElementById("demo").innerHTML = txt1 + txt2;
</script>
</body>
</html>
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javascript string
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<!DOCTYPE html>
<html>
<body>
<p id="demo"></p>
<script>
var carName1 = "Volvo XC60";
var carName2 = 'Volvo XC60';
document.getElementById("demo").innerHTML =
carName1 + "<br>" + carName2;
</script>
</body>
</html>
........banyak yg lain...sumber:
http://www.w3schools.com/js/js_examples.asp
