Javascript basics Summary
Jscript is Microsoft’s version of JavaScript a scripting language that is standardized by the ECMA international as ECMA script.
- Often, JavaScript appear in the <head> section of the HTML document, the browse interprets the contents of the <head> section first.
- Function parseInt converts its string arguments to an integer.
- JavaScript does not require variables to have a type can be used in a program. A variable in JavaScript can contain a value of any data type, for this reason JavaScript is referred to as a loosely typed language.
- Experience has shown that the best way to develop and maintain a large program is to construct it from small, simple pieces or modules. This technique is called divide an conquer.
- Modules in JavaScript are called functions, program are written by combining new function that the programmer writes with “prepackaged” function.
- The prepackaged functions that belong to JavaScript objects are often called methods. The method implies that function belongs to a particular object.
- The function is invoked by a function call. The function call specifies the function name and provides information that the called function need to do its task.
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