Page 1/3 of the basic JavaScript syntax set

Create a script block
<Script language = "JavaScript">
JavaScript code goes here
</SCRIPT>
Hide scripts Code

<Script language = "JavaScript">
<! --
Document. Write ("hello ");
// -->
</SCRIPT>

Display when the browser does not support

<NoScript>
Hello to the non-JavaScript browser.
</NoScript>

Link external script file

<Script language = "JavaScript" src = "/" youname. js ""> </SCRIPT>

Annotation script

// This is a comment
Document. Write ("hello"); // This is a comment
/*
All of this
Is a comment
*/

Output to Browser

Document. Write ("<strong> output content </strong> ");

Define Variables

VaR myvariable = "some value ";

String Addition

VaR mystring = "string1" + "string2 ";

String search

<Script language = "JavaScript">
<! --
VaR myvariable = "Hello there ";
VaR thereplace = myvariable. Search ("There ");
Document. Write (thereplace );
// -->
</SCRIPT>

String replacement

Thisvar. Replace ("Monday", "Friday ");