VBScript Reference Manual for InduSoft Web Studio

More documents

Recommendations

Info

VBScript Reference Manual InduSoft Web Studio Const Description Declares constants for use in place of literal values Usage [Public | Private] Const constname = expression Arguments Public Optional. Keyword used at script level to declare constants that are available to all procedures in all scripts. Not allowed in procedures. Private Optional. Keyword used at script level to declare constants that are available only within the script where the declaration is made. Not allowed in procedures. constname Required. Name of the constant; follows standard variable naming conventions. expression Required. Literal or other constant, or any combination that includes all arithmetic or logical operators except Is. Remarks Constants are public by default. Within procedures, constants are always private; their visibility can't be changed. Within a script, the default visibility of a script-level constant can be changed using the Private keyword. To combine several constant declarations on the same line, separate each constant assignment with a comma. When constant declarations are combined in this way, the Public or Private keyword, if used, applies to all of them. You can't use variables, user-defined functions, or intrinsic VBScript functions (such as Chr) in constant declarations. By definition, they can't be constants. You also can't create a constant from any expression that involves an operator, that is, only simple constants are allowed. Constants declared in a Sub or Function procedure are local to that procedure. A constant declared outside a procedure is defined throughout the script in which it is declared. You can use constants anywhere you can use an expression. Example Const MyVar = 459 'Constants are Public by default. Private Const MyString = "HELP" 'Declare Private constant. Const MyStr = "Hello", MyNumber = 3.4567 ‘Declare multiple constants on same line. Dim Description Declares variables and allocates storage space Usage Dim varname[([subscripts])][, varname[([subscripts])]] . . . Arguments varname Name of the variable, following standard variable naming conventions subscripts Dimensions of an array variable, up to 60 multiple dimensions may be declared. The subscripts argument uses the following syntax: Upper[,upper]… The lower bound of an array is always zero. Remarks Variables declared with the Dim statement at the script level are available to all procedures within the script. Variables declared within a procedure are available only within the procedure. A Dim statement with empty parentheses declares a dynamic array, which can be defined later within a procedure using the ReDim statement. Returns N/A Example Dim counter ‘ Declare a variable Dim counter1, counter2 ‘ Declares two variables Dim item(9) ‘ Declares an array with 10 elements Dim item() ‘ Declares a dynamic array 174 InduSoft, Ltd.
InduSoft Web Studio VBScript Reference Manual Do…Loop Description Repeats a block of statements while a condition is True or until a condition becomes True. Usage Do [{While | Until} condition] [statements] [Exit Do] [statements] Loop ' or use this syntax Do [statements] [Exit Do] [statements] Loop [{While | Until} condition] Arguments condition Numeric or string expression that is True or False. If condition is Null, condition is treated as False. statements One or more statements that are repeated while or until condition is True. Remarks The Exit Do can only be used within a Do...Loop control structure to provide an alternate way to exit a Do...Loop. Any number of Exit Do statements may be placed anywhere in the Do...Loop. Often used with the evaluation of some condition (for example, If...Then), Exit Do transfers control to the statement immediately following the Loop. When used within nested Do...Loop statements, Exit Do transfers control to the loop that is nested one level above the loop where it occurs. Example Do Until DefResp = vbNo MyNum = Int (6 * Rnd + 1) ' Generate a random integer between 1 and 6. DefResp = MsgBox (MyNum & " Do you want another number?", vbYesNo) Loop Dim Check, Counter Check = True: Counter = 0 'Initialize variables. Do 'Outer loop. Do While Counter < 20 'Inner loop Counter = Counter + 1 'Increment Counter. If Counter = 10 Then 'If condition is True... Check = False 'Set value of flag to False. Exit Do 'Exit inner loop. End If Loop Loop Until Check = False 'Exit outer loop immediately InduSoft, Ltd. 175
Page 1 and 2:
VBScript Reference Manual for InduS
Page 3 and 4:
InduSoft Web Studio VBScript Refere
Page 5 and 6:
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41:
Page 44 and 45:
VBScript Reference Manual InduSoft
Page 46 and 47:
Page 48 and 49:
Page 50 and 51:
Page 52 and 53:
Page 54 and 55:
Page 56 and 57:
Page 58 and 59:
Page 60 and 61:
Page 62 and 63:
Page 64 and 65:
Page 66 and 67:
Page 68 and 69:
Page 70 and 71:
Page 72 and 73:
Page 74 and 75:
Page 76 and 77:
Page 78 and 79:
Page 80 and 81:
Page 82 and 83:
Page 84 and 85:
Page 86 and 87:
Page 88 and 89:
Page 90 and 91:
Page 92 and 93:
Page 94 and 95:
Page 96 and 97:
Page 98 and 99:
Page 100 and 101:
Page 102 and 103:
Page 104 and 105:
Page 106 and 107:
Page 108 and 109:
Page 110 and 111:
Page 112 and 113:
Page 114 and 115:
Page 116 and 117:
Page 118 and 119:
Page 120:
Page 123 and 124: InduSoft Web Studio VBScript Refere
Page 173: InduSoft Web Studio VBScript Refere
Page 225 and 226:
Page 227 and 228:
Page 229 and 230:
Page 231 and 232:
Page 233 and 234:
Page 235 and 236:
Page 237 and 238:
Page 239 and 240:
Page 241 and 242:
Page 243 and 244:
Page 245 and 246:
Page 247 and 248:
Page 249 and 250:
Page 251 and 252:
Page 253 and 254:
Page 255:
show all

VBScript Reference Manual for InduSoft Web Studio

Create successful ePaper yourself

Delete template?

Save as template?