VBScript LeftFunction

VBScript 参考手册Complete VBScript Reference Manual

The Left function returns a specified number of characters from the left side of a string.

Tip:Use the Len function to determine the number of characters in a string.

Tip:See the Right function.

Syntax

Left(string,length)

Parameter Description
string Required. The string from which to return characters.
length Required. Specifies how many characters to return. If set to 0, an empty string ("") is returned. If set to greater than or equal to the length of the string, the entire string is returned.

Examples

Example 1

<script type="text/vbscript">

txt="This is a beautiful day!"
document.write(Left(txt,15))

</script>

The output of the above example is:

This is a beaut

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Example 2

Returns the entire string:

<script type="text/vbscript">

txt="This is a beautiful day!"
x=Len(txt)
document.write(Left(txt,x))

</script>

The output of the above example is:

This is a beautiful day!

Try it Yourself »
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