Understanding JavaScript Advanced Programming Learning

JavaScript is a scripting language designed for Web page interaction and consists of the following three different parts

• ECMAScript, providing core language features

• Document Object Model (DOM):D Ocument object models that provide an interface for accessing and manipulating Web page content

• Browser (BOM): Browser Object Model, which provides methods and interfaces for interacting with the browser

<script type= "Text/javascript" defer= "defer" charset= "Utf-8" ></script>

• CharSet tell the browser the encoding format

• Defer tells the browser to download it now but delays execution. Delay until the browser encounters the

The JavaScript code is interpreted from top to bottom, as follows

<script type= "Text/javascript" >function Sayhell () {alert ("</script>");} </script>

When the browser encounters a string </script> thinks it is the end tag, remember not to appear anywhere in the code. However, you can solve this problem by escaping characters, as follows

<script type= "Text/javascript" >function Sayhell () {alert ("<\/script>");} </script>

ECMAScript keywords

Breakdoinstanceoftypeofcase elsenewvarcatchfinallyreutrnvoidcontinueforswitchwhiledebugger* Functionthiswithdefaultif Throwdeletein Try

ECMAScript reserved words, although do not know what to do, but feel pretty tall on the

Abstractenumintshortbooleanexportinterfacestaticbyteexportinterfacesupercharfinalnativesynchronizedclassfloatpackagethrow Sconstgotoprivatetransientdebuggerimplementsprotectedvolatiledoubleimportpublic

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Understanding JavaScript Advanced Programming Learning