Javascript
History
Javascript, created by Brendan Eich, 1995, different from java.
HTML
<script>
alert("Hello World\n");
</script>
Position
- Javascript in label body will be executed when loading.
- Javascript in label head will be executed when calling.
Output
- window.alert()
- document.write()
- console.log()
- *.innerHTML
Liberal
- Number
- 3.14
- String
- “Hello World”
- Expression
- 1 + 1
- Array
- [1, 2, 3]
- Object
- {id: 0, name: “”}
- Function
- function f(x) { return 0 }
Variable
Keyword var.
Event
- onchange
- onclick
- onmouseover
- onmouseout
- onkeydown
- onload