Problem with ngStyle: Error indicating that the expected '}' is missing

I encountered an error in the Chrome console when trying to interpret the code below:

<div [ngStyle]="{'width': '100%'; 'height': '100%'; 'background-size': 'cover'; 'background-repeat': 'no-repeat'; 'border-radius': '0px';}"></div>

An uncaught error occurred with the message: Template parse errors: Parser Error: Missing expected } at column 17 in [{'width': '100%'; 'height': '100%'; 'background-size': 'cover'; 'background-repeat': 'no-repeat'; 'border-radius': '0px';}] in ng:///AppModule/HomeComponent.html@31:29 ("="width: 100%; height: 100%;">

What could be causing this error?

javascripthtmlcssangulartypescript

Answer №1

When using the ngStyle attribute, it is important to note that it takes a javascript object (which must be represented as a string), unlike the style attribute which accepts CSS styles. This is why values like 100% need to be wrapped in quotes, such as '100%', along with other attributes like background-size because characters like % and - are not allowed in javascript attribute names/values.

CSS

blah {
  attribute: value;
  attribute-dash: value;
}

Object

{
  attribute: value,
  'attribute-dash': value
}

To properly use ngStyle, you also need to replace the ; with ,.

<div [ngStyle]="{'width': '100%', 'height': '100%', 'background-size': 'cover', 'background-repeat': 'no-repeat', 'border-radius': '0px'}"></div>

NOTE: It is recommended to use ngStyle when working with dynamic values or toggling specific styles based on conditions. If you simply want to set inline styles, stick to using the regular style attribute.

Answer №2

The most recent update allows for the utilization of units as well.

Each key represents a style name, which may include a . suffix, for example 'top.px' or 'font-style.em'.

For instance

[ngStyle]="{'width.px':200, 'height.px':200}"

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