![]() Note that the behavior of using unsafeStatic carries the same caveats as literal: because changing values causes a new template to be parsed and cached in memory, they should not change frequently. Here's a quick reference followed by more detailed information about each expression type. See Custom directives for more information. In addition, all expressions can accept directives, which are special functions that customize the way an expression is processed and rendered. Generally all expressions accept primitive values like strings and numbers, and some expressions support additional value types. Valid values for expressions differ based on where the expression occurs. Now hide the input by removing its border. Allow the input to stretch to take up all available space. Expressions inside the element's content, where child nodes go, render child nodes or text. Use a flexbox layout to arrange the input and the button side by side. Expressions inside the element tag itself affect the element. In a Lit component, this means whenever the render method is called.Įxpressions can only be placed in specific locations in the template, and how an expression is interpreted depends on where it appears. The expression is evaluated when the template is evaluated, and the result of the expression is included when the template renders. An expression can be any JavaScript expression. Lit templates can include dynamic values called expressions. ![]() Arrays or iterables of any of the supported types. ![]()
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