how to implement not with if statement in ember handlebar?

2018-06-23 11:19:40

I have a statement like below

{{#if IsValid}}

but i want to know that how can i use if statement with not like below

{{#if not IsValid}}

Simple answers for simple questions:

{{#unless isValid}}
{{/unless}}

Also keep in mind that you can insert an {{else}} in between an {{#if}} or {{#unless}} and the closing tag.

You have many ways of doing that.

1. Use `{{unless}}` :

{{#unless isValid}}
  ...
{{else}}
  ...
{{/unless}}

{{#if (if isValid false true)}}
  ...
{{else}}
  ...
{{/if}}

{{#if (not isValid)}}
  ...
{{else}}
  ...
{{/if}}

{{#if items.length}}
    //Render
{{/if}}

Here items.length .. if it returns some value except null, then only it will enters into the if loop.

NOTE : You can check Boolean values also. In If block

{{#if booleanFloag}}

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