[vc_row][vc_column][vc_btn title=”SOFTWARE AGILITY” style=”flat” color=”black” i_icon_fontawesome=”fa fa-shield” add_icon=”true” link=”url:http%3A%2F%2Fdoc.casthighlight.com%2Fsoftware-agility%2F|||”][vc_btn title=”CODE READABILITY” style=”outline” color=”black” i_icon_fontawesome=”fa fa-code” add_icon=”true” link=”url:http%3A%2F%2Fdoc.casthighlight.com%2Fcategory%2Fproduct%2Findicators-methodology%2Fcode-insights%2Fsoftware-agility%2Fcode-readability%2F|||”][vc_empty_space height=”12px”][vc_row_inner][vc_column_inner][vc_column_text]

Why you should care

[/vc_column_text][vc_column_text]Although JavaScript allows to declare multiple variables in a single chain, it is recommended to declare each variable separately as it is easier to read and reduce the risk of unexpected behaviors in some cases.[/vc_column_text][vc_empty_space][/vc_column_inner][/vc_row_inner][vc_empty_space height=”12px”][vc_empty_space][vc_separator][vc_column_text]

How we detect

[/vc_column_text][vc_column_text]CAST Highlight counts one occurrence when multiple variable declarations are detected.

Bad Code

var header,
topnav,
content;

Good Code

var firstVar;
var secondVar;
var thirdVar;

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References

[/vc_column_text][vc_column_text]https://eslint.org/docs/rules/one-var
https://bluepnume.medium.com/theres-no-need-to-define-all-javascript-vars-once-at-the-top-of-a-function-and-there-hasn-t-been-a66b31f21822[/vc_column_text][vc_empty_space][vc_row_inner][vc_column_inner][vc_single_image image=”5362″ img_size=”full”][vc_column_text]

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