VBScript Reference Manual for InduSoft Web Studio

More documents

Recommendations

Info

VBScript Reference Manual InduSoft Web Studio Rnd Description Returns a random number less than 1 but greater than or equal to 0. Usage realVal = Rnd[(number)] Arguments number Optional. The number argument can be any valid numeric expression. Result A Real value. Return Values A random number less than 1 but greater than 0. If number is Rnd generates Less than zero The same number every time, using number as the seed Greater than zero The next random number in the sequence Equal to zero The most recently generated number Not supplied The next random number in the sequence Remarks The Rnd function returns a value less than 1 but greater than or equal to 0. The value of number determines how Rnd generates a random number: For any given initial seed, the same number sequence is generated because each successive call to the Rnd function uses the previous number as a seed for the next number in the sequence. Before calling Rnd, use the Randomize statement without an argument to initialize the random-number generator with a seed based on the system timer. To repeat sequences of random numbers, call Rnd with a negative argument immediately before using Randomize with a numeric argument. Using Randomize with the same value for number does not repeat the previous sequence. To produce random integers in a given range, use this formula: Int((upperbound - lowerbound + 1) * Rnd + lowerbound) Here, upperbound is the highest number in the range, and lowerbound is the lowest number in the range. See also Randomize Example Const UpperBound = 10 Const LowerBound = 1 Dim counter For counter = 1 to 10 ‘ Produces 10 numbers between 1-20 value = Int((UpperBound-LowerBound+1)*Rnd + LowerBound) MsgBox “Random Number is = “ & value Next 154 InduSoft, Ltd.
InduSoft Web Studio VBScript Reference Manual Round Description Returns a number rounded to a specified number of decimal places Usage Round(expression[, numdecimalplaces]) Arguments expression Required. Numeric expression being rounded. numdecimalplaces Optional. Number indicating how many places to the right of the decimal are included in the rounding. If omitted, integers are returned by the Round function. Return A Variant subtype Double. A number rounded to a specified number of decimal places. Remarks The Round function performs round to even, which is different from round to larger. The return value is the number closest to the value of expression, with the appropriate number of decimal places. If expression is exactly halfway between two possible rounded values, the function returns the possible rounded value whose rightmost digit is an even number. (In a round to larger function, a number that is halfway between two possible rounded values is always rounded to the larger number.) See also Int and Fix Example Rem Using the Round function to round a number to two decimal places: Dim MyVar, pi pi = 3.14159 MyVar = Round(pi, 2) ' MyVar contains 3.14. Rem How rounding to even works: Dim var1, var2, var3, var4, var5 var1 = Round(1.5) 'var1 contains 2 var2 = Round(2.5) 'var2 contains 2 var3 = Round(3.5) 'var3 contains 4 var4 = Round(0.985, 2) 'var4 contains 0.98 var5 = Round(0.995, 2) 'var5 contains 1.00 RTrim Description Returns a copy of a string without leading spaces (LTrim), trailing spaces (RTrim), or both leading and trailing spaces (Trim). Usage strVal = RTrim(string) Arguments string Required. Any valid string expression. Remarks If string contains Null, Null is returned. See Also Left, LeftB, LTrim, Mid, MidB, Right, RightB, Trim Example The following example uses the LTrim, RTrim, and Trim functions to trim leading spaces, trailing spaces, and both leading and trailing spaces, respectively Dim MyVar MyVar = LTrim(" vbscript ") ' MyVar contains "vbscript ". MyVar = RTrim(" vbscript ") ' MyVar contains " vbscript". MyVar = Trim(" vbscript ") ' MyVar contains "vbscript". InduSoft, Ltd. 155
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: VBScript Reference Manual InduSoft
Page 120: VBScript Reference Manual InduSoft
Page 123 and 124: InduSoft Web Studio VBScript Refere
Page 153: InduSoft Web Studio VBScript Refere
Page 205 and 206:
Page 207 and 208:
Page 209 and 210:
Page 211 and 212:
Page 213 and 214:
Page 215 and 216:
Page 217 and 218:
Page 219 and 220:
Page 221 and 222:
Page 223 and 224:
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?