Assignment In Conditional Expression Error

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Assignment In Conditional Expression Javascript

been removed. You’ll be auto redirected in 1 second. C/C++ Building Reference C/C++ Build Errors Compiler Warnings C4600 Through assignment within conditional expression C4799 Compiler Warnings C4600 Through C4799 Compiler Warning (level 4) C4706 Compiler Warning (level 4) C4706 Compiler Warning (level 4) C4706 Compiler Warning (level 1) C4600 Compiler Warning (level 1) expected a conditional expression and instead saw an assignment jshint C4602 Compiler Warning (level 1) C4603 Compiler Warning (level 1) C4606 Compiler Warning (level 3) C4608 Compiler Warning (level 4) C4610 Compiler Warning (level 4) C4611 Compiler Warning (level 1) C4612 Compiler Warning (level 1) C4613 Compiler Warning (level 1) C4615 Compiler Warning (level 1) C4616 Compiler Warning (level 1) C4618 Compiler Warning (level 3) C4619 Compiler Warning (level 1) C4620 Compiler

Can't Assign To Conditional Expression

Warning (level 1) C4621 Compiler Warning (level 3) C4622 Compiler Warning (level 4) C4623 Compiler Warning (level 1) C4624 Compiler Warning (level 4) C4625 Compiler Warning (level 4) C4626 Compiler Warning (level 1) C4627 Compiler Warning (level 1) C4628 Compiler Warning (level 4) C4629 Compiler Warning (level 1) C4630 Compiler Warning (level 1) C4631 Compiler Warning (level 1) C4632 Compiler Warning (level 3) C4633 Compiler Warning (level 4) C4634 Compiler Warning (level 3) C4635 Compiler Warning (level 3) C4636 Compiler Warning (level 3) C4637 Compiler Warning (level 3) C4638 Compiler Warning (level 4) C4639 Compiler Warning (level 3) C4640 Compiler Warning (level 3) C4641 Compiler Warning (level 3) C4645 Compiler Warning (level 3) C4646 Compiler Warning (level 1) C4650 Compiler Warning (level 1) C4651 Compiler Warning (level 1) C4652 Compiler Warning (level 2) C4653 Compiler Warning (level 1) C4655 Compiler Warning (level 1) C4656 Compiler Warning (level 1) C4657 Compiler Warning (level 1) C4659 Compiler Warning (level 1) C4661 Compiler Warning (level 1) C4662 Compiler Warning (level 1) C4667 Compiler Warning (level 4) C4668 Compiler Warning (level 1) C4669 Compiler Warning (level 4) C

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Syntax Error In Conditional Expression Unexpected Token '

Join them; it only takes a minute: Sign up Jslint error: Expected a conditional expression and instead saw an assignment up vote 0 down vote favorite 1 For this code: var i = 0; for (i < menuitem.length; i https://msdn.microsoft.com/en-us/library/7hw7c1he.aspx += 1;) JSlint returns: Expected a conditional expression and instead saw an assignment. Expected an identifier and instead saw ')'. And refuses to continues scanning. This code works fine but what is wrong? How could I write this with an "if" statement? (if that is what jslint means). Thanks for your help guys! javascript jslint share|improve this question asked Sep 10 '12 at 2:07 cmplieger 2,82973162 1 I'm not sure how your for loop works. It looks http://stackoverflow.com/questions/12344624/jslint-error-expected-a-conditional-expression-and-instead-saw-an-assignment like it would be an infinite loop. –Ryan♦ Sep 10 '12 at 2:11 @minitech it runs trough a list of menu items. How should this be written then? –cmplieger Sep 10 '12 at 2:14 Your for loop is an infinite loop. JSlint is right in warning you. I think what you intended to write was: for (;i < menuitem.length; i += 1). (check out where I moved the semicolon). Of course the more correct loop would be: for (var i=0; i < menuitem.length; i += 1) –slebetman Sep 10 '12 at 2:16 add a comment| 5 Answers 5 active oldest votes up vote 2 down vote accepted Yeah, JSLint is pretty vicious. As others have pointed out, you're not filling things in in the right places, but aside from that, JSLint requires that you put something in the initialization part of the for loop. There are a couple options you can do to make it play nice without messing with your logic, though. My favorite is to just reset i (even though it's already set): var i = 0; for (i = 0; i < menuitem.length; i += 1) { /** do stuff **/ } This make JSLint happy and also ensures that i gets reset if you decide to use it for another for loop in the same lexical scope. Another option is to just toss a n

here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company http://stackoverflow.com/questions/151850/why-would-you-use-an-assignment-in-a-condition Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Why would you use an assignment in a condition? up vote 45 down vote favorite 6 In many languages assignments are legal conditional expression in conditions. I never understood the reason behind this. Why would you write: if (var1 = var2) { ... } instead of: var1 = var2; if (var1) { ... } variable-assignment condition share|improve this question edited Oct 5 '08 at 19:11 Blorgbeard 60.3k30157219 asked Sep 30 '08 at 5:24 lajos 17.9k145569 add a comment| 9 Answers 9 active oldest votes up vote 69 down vote accepted It's more useful for loops than if statements. in conditional expression while( var = GetNext() ) { ...do something with var } Which would otherwise have to be written var = GetNext(); while( var ) { ...do something var = GetNext(); } share|improve this answer answered Sep 30 '08 at 5:32 Gerald 16.8k64886 7 I agree - but would write: while ((var = GetNext()) != 0) { ... } without thinking twice, partly because GCC complains if I don't with my default compilation options. –Jonathan Leffler Oct 8 '08 at 22:08 1 True. Assuming you're using a language that supports for-loop declarations, and you're not already using var outside of the loop. –Gerald Oct 24 '12 at 16:02 in Some languages, like ANSI C, scoping rules don't permit this approach, @KerrekSB –data_hope Oct 9 '13 at 16:30 3 @wirrbel: You mean ANSI C from what, 1989? Like when they had steam engines and punch cards? That may be the case, but is that relevant? –Kerrek SB Oct 9 '13 at 18:18 Is this a bad practice? My javascript linter gives me warning: 'expected conditional expression and instead saw an assignment' when I do while(item = stream.read()) { ... } –Sung Won Cho Jun 19 '15 at 4:32 | show 1 more comment up vote 26 down vote It's more useful if you are call