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Last updated on
Apr 27, 2021 06:56:56 AM GMT
Using Flash'sMathobject, you can round to the nearest whole number using theMath.roundcommand. You may, however, prefer to round to different decimal places. This TechNote offers a technique for rounding to a specified decimal place.
Rounding to the hundredth decimal
Rounding to the nearest decimal simply involves inserting code in the Actions panel, as follows:
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Open your movie in Flash. |
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Select a Frame or an Instance. |
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Choose Windows > Panels > Actions. |
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Add this ActionScript in your Actions Panel to round to the hundredth decimal place, replacing yourNumber with the value you would like to round:
value= int((yourNumber)*100)/100; |
How the code works
The number used in the example below is 20 divided by 7, which equates to 2.857142857142857.
value= int((20/7)*100)/100;
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int(20/7)returns the value of 2 by removing the decimal places off the number created by the calculation in parentheses so that it appears as a whole number. |
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Multiplying that result by 100 gives 285.
Note: This is due to the fact that theintfunction does not erase the decimals; it just does not show them. |
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Dividing 285 by 100 gives 2.85. You have now rounded to the nearest hundredth. |
Rounding to other decimal places
If you prefer to round to a decimal other than to the hundredth, you can easily modify the code. Below are examples of code that will round (20/7) to different decimals:
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Code |
Number of Decimal Places |
Example Results |
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value= Math.round(20/7); |
none |
3 |
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value= int((20/7)*10)/10; |
1 |
2.8 |
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value= int((20/7)*100)/100; |
2 |
2.85 |
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value= int((20/7)*1000)/1000; |
3 |
2.857 |
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value= int((20/7)*10000)/10000; |
4 |
2.85 71 |
Additional information
For more details on how to round to the nearest integer, please see the online ActionScript entry for Math.round.
Keywords: math round; object; tn_15542
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