Script > Commonly Used Script Function Reference List > Script Function Perfomance Decription

Currently, with respect to the processing of expressions, some of the expressions use the processing engine that comes with the product, and some of the expressions are handled using the js engine (jsEngine). An expression, which has both system-supported expressions and system-unsupported expressions, will still be parsed by the js engine (jsEngine).

When dealing with a large amount of data in the market, the efficiency of the expression processed by jsEngine is lower than that of the expression supported by the product itself. Therefore, in order to improve the processing efficiency of the expression, the range of the expression supported by the product is extended. , mainly in the product support for the expression to add support for the following functions, when the expression contains the following function, the product's own processing engine processing.

Function	Description
right	Returns the rightmost character in a text value
left	Returns the leftmost character in a text value
len	Returns the number of characters in the text string
replace	Replace the characters in the text
trim	Remove the spaces on both sides of the string
upper	Convert text to uppercase
lower	Convert text to lowercase
weekdayname	Returns the current date of the week
year	Returns the date of the year
month	The month of the return date
parseDate	Parse a string into dates
formatDate	Format the date as a string
position	Convert longitude and latitude to a long integer for storage
substring	Returns a new string that is a substring of this string
sqr	Square the data
sqrt	Returns the square root of the given data
abs	Returns the absolute value of the given data
indexOf	Returns the first occurrence of a specified string value in a string