68 lines
2.5 KiB
HTML
68 lines
2.5 KiB
HTML
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<h1>Attribute, class, and style bindings</h1>
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<h2>Attribute binding</h2>
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<!-- #docregion attrib-binding-colspan -->
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<table border=1>
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<!-- expression calculates colspan=2 -->
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<tr><td [attr.colspan]="1 + 1">One-Two</td></tr>
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<!-- ERROR: There is no `colspan` property to set!
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<tr><td colspan="{{1 + 1}}">Three-Four</td></tr>
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-->
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<!-- #docregion colSpan -->
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<!-- Notice the colSpan property is camel case -->
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<tr><td [colSpan]="1 + 1">Three-Four</td></tr>
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<!-- #enddocregion colSpan -->
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<tr><td>Five</td><td>Six</td></tr>
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</table>
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<!-- #enddocregion attrib-binding-colspan -->
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<div>
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<!-- #docregion attrib-binding-aria -->
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<!-- create and set an aria attribute for assistive technology -->
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<button [attr.aria-label]="actionName">{{actionName}} with Aria</button>
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<!-- #enddocregion attrib-binding-aria -->
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</div>
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<hr />
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<h2>Styling precedence</h2>
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<!-- #docregion basic-specificity -->
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<h3>Basic specificity</h3>
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<!-- The `class.special` binding will override any value for the `special` class in `classExpr`. -->
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<div [class.special]="isSpecial" [class]="classExpr">Some text.</div>
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<!-- The `style.color` binding will override any value for the `color` property in `styleExpr`. -->
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<div [style.color]="color" [style]="styleExpr">Some text.</div>
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<!-- #enddocregion basic-specificity -->
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<!-- #docregion source-specificity -->
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<h3>Source specificity</h3>
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<!-- The `class.special` template binding will override any host binding to the `special` class set by `dirWithClassBinding` or `comp-with-host-binding`.-->
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<comp-with-host-binding [class.special]="isSpecial" dirWithClassBinding>Some text.</comp-with-host-binding>
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<!-- The `style.color` template binding will override any host binding to the `color` property set by `dirWithStyleBinding` or `comp-with-host-binding`. -->
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<comp-with-host-binding [style.color]="color" dirWithStyleBinding>Some text.</comp-with-host-binding>
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<!-- #enddocregion source-specificity -->
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<!-- #docregion dynamic-priority -->
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<h3>Dynamic vs static</h3>
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<!-- If `classExpr` has a value for the `special` class, this value will override the `class="special"` below -->
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<div class="special" [class]="classExpr">Some text.</div>
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<!-- If `styleExpr` has a value for the `color` property, this value will override the `style="color: blue"` below -->
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<div style="color: blue" [style]="styleExpr">Some text.</div>
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<!-- #enddocregion dynamic-priority -->
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<!-- #docregion style-delegation -->
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<comp-with-host-binding dirWithHostBinding></comp-with-host-binding>
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<!-- #enddocregion style-delegation -->
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