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problem in string breaking using javascript

string break in javascript, string break, explode string in javascript,

7:49 am on Jan 31, 2008 (gmt 0)

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joined:Jan 26, 2008
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I am using the substr() and substring() javascript both functions in my code I have to choose the extenssion of file.
I am using it as:
1 - form.field.value.substr(-3);
2 - form.field.value.substring(-3);

it is working in firefox but not working in IE-5,6.

Please help me thanks.

4:28 pm on Jan 31, 2008 (gmt 0)

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WebmasterWorld Senior Member fotiman is a WebmasterWorld Top Contributor of All Time 10+ Year Member Top Contributors Of The Month

joined:Oct 17, 2005
votes: 26

substr(start, length)
substr can take a negative number as the start index. -1 specifies the last character, -2 the second-to-last character, and so on.

substring(from, to)
substring takes an integer that specifies the position within the string of the first character of the substring. It must be between 0 and the string length - 1.

Therefore, substring(-3) is not valid use of substring.


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