javascript_tutorial

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Javascript input length prototype This property is only present in arrays created by regular expression matches. Reflects the number of elements in an array. The prototype property allows you to add properties and methods to an object. In the following sections, we will have a few examples to illustrate the usage of Array properties. constructor Javascript array constructor property returns a reference to the array function that created the instance's prototype. Syntax Its syntax is as follows: array.constructor Return Value Returns the function that created this object's instance. Example Try the following example. JavaScript Array constructor Property var arr = new Array( 10, 20, 30 ); document.write("arr.constructor is:" + arr.constructor); 178
Javascript Output arr.constructor is:function Array() { [native code] } length Javascript array length property returns an unsigned, 32-bit integer that specifies the number of elements in an array. Syntax Its syntax is as follows: array.length Return Value Returns the length of an array. Example Try the following example. JavaScript Array length Property var arr = new Array( 10, 20, 30 ); document.write("arr.length is:" + arr.length); Output arr.length is:3 179
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About the Tutorial JavaScript is a
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Bitwise Operators .................
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23. String ........................
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setUTCDate () .....................
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Checking for Plug-Ins .............
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1. OVERVIEW Javascript What is Java
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Javascript components, integrates w
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Javascript This function can be use
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Javascript The following example sh
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Javascript JavaScript in Chrome Her
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4. PLACEMENT Javascript There is a
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Javascript This code will
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5. VARIABLES Javascript JavaScript
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Javascript Within the body of a fun
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6. OPERATORS Javascript What is an
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Javascript document.write("a - b =
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Javascript the right operand, if ye
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Javascript Output (a == b) => false
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Javascript Output (a && b) => fal
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Javascript document.write("(a | b)
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Javascript Ex: C /= A is equivalent
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Javascript Set the variables to dif
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Javascript Function Undefined Null
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7. IF-ELSE Javascript While writing
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Javascript Output Qualifies for dri
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Javascript Try the following code t
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Javascript Syntax The objective of
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Javascript switch (grade) { case 'A
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Javascript Syntax The syntax of whi
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Javascript do{ Statement(s) to be e
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10. FOR LOOP Javascript The for Loo
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Javascript Current Count : 6 Curren
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Javascript Set the variable to diff
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Javascript Set the variable to
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Javascript Entering the loop 2 3 4
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Javascript Output Entering th
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13. FUNCTIONS Javascript A function
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Javascript Click the following butt
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Javascript Click the following but
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Javascript Use different parameters
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Javascript var variablename = funct
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14. EVENTS Javascript What is an Ev
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Javascript ....... onmouseove
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Javascript ondragenter script Trigg
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Javascript onplaying script Trigger
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15. COOKIES Javascript What are Coo
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Javascript Enter name: Outp
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Javascript Setting Cookies Expiry D
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Javascript Output Enter Cookie Na
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Javascript Example Try the followin
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Javascript setTimeout('Redirect()',
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17. DIALOG BOX Javascript JavaScrip
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Javascript Output Click the fol
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18. VOID KEYWORD Javascript void is
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Javascript Click the followin
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Javascript 2. If you do not want to
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Javascript 104
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Javascript Methods are useful for e
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Javascript Output Book title is
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Javascript User-defined objects /
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Javascript In the following section
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Javascript Click the following t
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Javascript Day of the Month must be
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Javascript alert("Value of bigNumbe
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Javascript constructor It returns a
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Javascript Try the following exampl
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Javascript document.write(""); docu
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Javascript document.write("num.toPr
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Page 142 and 143: Javascript Method toSource() toStri
Page 144 and 145: Javascript Output flag.toString
Page 146 and 147: 23. STRING Javascript The String ob
Page 148 and 149: Javascript Try the following exampl
Page 150 and 151: Javascript concat() indexOf() lastI
Page 152 and 153: Javascript document.writeln("str.ch
Page 154 and 155: Javascript Argument Details string2
Page 156 and 157: Javascript lastIndexOf () This meth
Page 158 and 159: Javascript var index = str1.localeC
Page 160 and 161: Javascript substring. $n or $nn Whe
Page 162 and 163: Javascript Search () This method ex
Page 164 and 165: Javascript document.write( sliced )
Page 168 and 169: Javascript Return Value Returns a s
Page 170 and 171: Javascript JavaScript String toLow
Page 172 and 173: Javascript var str = "Apples are r
Page 174 and 175: Javascript were in a tag sup() Cau
Page 176 and 177: Javascript blink () This method cau
Page 180 and 181: Javascript JavaScript String font
Page 182 and 183: Javascript JavaScript String link(
Page 184 and 185: Javascript JavaScript String strik
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Page 190 and 191: Javascript Prototype The prototype
Page 192 and 193: Javascript push() reduce() reduceRi
Page 194 and 195: Javascript every () Javascript arra
Page 196 and 197: Javascript } var passed = [12, 5, 8
Page 198 and 199: Javascript Array.prototype.filter =
Page 200 and 201: Javascript } }; Example Try the fol
Page 202 and 203: Javascript var len = this.length; v
Page 204 and 205: Javascript join () Javascript array
Page 206 and 207: Javascript var from = Number(argume
Page 208 and 209: Javascript } var index = [12, 5, 8,
Page 210 and 211: Javascript Array.prototype.map = fu
Page 212 and 213: Javascript Its syntax is as follows
Page 214 and 215: Javascript var rv = arguments[1]; }
Page 216 and 217: Javascript } } throw new TypeError(
Page 218 and 219: Javascript } rv = this[i--]; break;
Page 220 and 221: Javascript } rv = fun.call(null, rv
Page 222 and 223: Javascript Output Removed element
Page 224 and 225: Javascript { } if (i in this && fun
Page 226 and 227: Javascript Return Value Returns a s
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Page 230 and 231: 25. DATE Javascript The Date object
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Page 234 and 235: Javascript Date Methods Here is a l
Page 236 and 237: Javascript universal time. setUTCMo
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Javascript Syntax Its syntax is as
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Javascript var dt = new Date(); d
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Javascript getMonth() : 11 getSecon
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Javascript Output getUTCHours() :
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Javascript JavaScript getYear Met
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Javascript JavaScript setFullYear
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Javascript If you specify a number
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Javascript monthValue : An integ
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Javascript setTime () Javascript da
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Javascript Date.setUTCFullYear(year
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Javascript document.write( dt );
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Javascript var dt = new Date(1993,
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Javascript toLocaleDateString () Ja
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Javascript For instances of Date,
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Javascript var dateobject = new
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Javascript Output 743850547000 Date
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Javascript minutes : An integer
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Javascript In the following section
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Javascript Property Value is : 0.43
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Javascript JavaScript Math SQRT2 P
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Javascript First Test Value : 3.141
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Javascript JavaScript Math atan() M
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Javascript var value = Math.atan2(+
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Javascript Output First Test Value
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Javascript var value = Math.log(10
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Javascript min ( ) This method retu
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Javascript var value = Math.pow(7,
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Javascript Return Value Returns the
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Javascript Output First Test Val
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27. REGEXP Javascript A regular exp
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Javascript Examples Following examp
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Javascript m g Specifies that if th
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Javascript Test1 - ignoreCase prope
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Javascript if ( re.multiline ){ doc
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Javascript exec ( ) The exec method
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Javascript document.write("Test 2 -
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Javascript document.write("Test 1 -
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Javascript There are several DOMs i
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Javascript forms[ ] 9 An array of F
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Javascript Ex: document.close( ) op
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Javascript This is main title Click
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Javascript createElement( tagName)
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Javascript NOTE: This example r
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Javascript Specifies the loading st
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Javascript NOTE: This example
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Javascript Part 3: JavaScript Advan
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Javascript Logical Errors Logic err
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Javascript Now let us try to catch
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Javascript Output Click the followi
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Javascript Click the following to s
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30. FORM VALIDATION Javascript Form
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Javascript Basic Form Validation Fi
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Javascript var emailID = document.m
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Javascript Manual Animation So let'
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Javascript } function moveRight(){
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Javascript It is not possible to s
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Javascript Output Checking for Plug
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Javascript //--> If you
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Javascript Error Messages in Firefo
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Javascript Use a JavaScript Debugge
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34. IMAGE MAP Javascript You can us
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Javascript Output You can feel the
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Javascript 6 plugins[] This propert
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Javascript document.write(" Browser
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