ColdFusion Tutorial
Remove leading and trailing spaces from a string using Trim, LTrim and RTrim.
Sometimes it is useful to remove leading and trailing spaces from a string.
Example: When saving a string to a database.
LTrim
LTrim function removes leading spaces from the string.
RTrim
RTrim function removes spaces from the end of a string.
Trim
Trim function removes leading and trailing spaces from a string.
The example also uses the Len function.
Len function return the length of the string expressed as a number.
Example 1 uses LTrim and RTrim. |
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<cfset the_string = " This example removes leading and ending spaces from a string. ">
Output the original string:
<cfoutput>#the_string#</cfoutput><br>
<!--- Len function return the length of the string expressed as a number. --->
The original length of the string:
<cfoutput>#Len(the_string)#</cfoutput><br>
<!--- LTrim function removes leading spaces from the string. --->
<cfset the_string = LTrim(the_string)>
<!--- Find the length of the string after using LTrim. --->
Output the length of the string after using the LTrim function:
<cfoutput>#Len(the_string)#</cfoutput><br>
<!--- RTrim function removes spaces from the end of a string. --->
<cfset the_string = RTrim(the_string)>
<!--- Find the length of the string after using RTrim. --->
Output the length of the string after using the RTrim function:
<cfoutput>#Len(the_string)#</cfoutput> | |
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| Output from example 1:
Output the original string: This example removes leading and ending spaces from a string.
The original length of the string: 69
Output the length of the string after using the LTrim function: 65
Output the length of the string after using the RTrim function: 61 |
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| Example 2 use Trim |
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<cfset the_string = " This example removes leading and ending spaces from a string. ">
Output the original string:
<cfoutput>#the_string#</cfoutput><br>
<!--- Len function return the length of the string expressed as a number. --->
The original length of the string:
<cfoutput>#Len(the_string)#</cfoutput><br>
<!--- Trim function removes leading and trailing spaces from a string. --->
<cfset the_string = Trim(the_string)>
Output the length of the string after using Trim:
<cfoutput>#Len(the_string)#</cfoutput> | |
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Output from example 2:
Output the original string: This example removes leading and ending spaces from a string.
The original length of the string: 69
Output the length of the string after using Trim: 61 | |
ColdFusion Tutorial test
Remove leading and trailing spaces from a string using Trim, LTrim and RTrim.
No test is available or implemented for this ColdFusion Tutorial.
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