[JavaScript] In Velocity, CANNOT assign null to LRS

来源：互联网发布：爱站seo 编辑：程序博客网时间：2024/06/06 20:16

If the RHS is a property or method reference that evaluates to null, it willnot be assigned to the LHS

E.G.

Precondition

VelocityContext context = new VelocityContext();context.put("nullPlacedInJava", null);

Velocity source and result:

$neverAppeared #set ($neverAppeared = "My value is haha")$neverAppeared #set ($neverAppeared = $nullPlacedInJava)$neverAppeared Result:$neverAppeared My value is haha My value is haha

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