为什么jshint无法将赋值识别为表达式? [英] Why does jshint not recognize an assignment as an expression?

问题描述

我如何修改这些行以使jshint开心?

How do I need to modify these lines to make jshint happy?

赋值是一个表达式. jshint为什么不理解这一点?显然，口译员可以.

An assignment is an expression. Why doesn't jshint understand this? Obviously the interpreter does.

Line 572: while(bookmark_element=bookmark_list[iterator++])

Expected a conditional expression and instead saw an assignment.


Line 582: while(bookmark_element=bookmark_list[iterator++])

Expected a conditional expression and instead saw an assignment.


Line 623: while(element_iterator=element_iterator.nextSibling)

Expected a conditional expression and instead saw an assignment.

推荐答案

如果您确实想收听JSHint，请通过以下方式将表达式转换为布尔值:

If you really want to listen to JSHint, convert the expression to a boolean by:

while (!!(bookmark_element=bookmark_list[iterator++]))

! means: Something that evaluates to true is converted to false,
         something that evaluates to false is converted to true.

因此，!!的意思是:将某些内容转换为条件表示.

So, !! means: Convert something to the conditional representation.

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