Calling Javascript Functions

The evaluateJavascript method allows you to execute JavaScript code from Swift in your enClose application. You can target either the main web view or an external display's web view for evaluation.

Function Syntax

evaluateJavascript(javaScript: String, target: TargetWebView = .main)

Parameters

Parameter	Type	Required	Description
javaScript	String	Yes	JavaScript code to be evaluated
target	TargetWebView	No	Target web view for evaluation (defaults to .main)

Example Usage

This example displays a simple alert on the main web view:

evaluateJavascript("alert('Hello World!');)")

This example toggles color inversion on the external display's web view:

evaluateJavascript("""
    const body = document.body;
    const currentFilter = body.style.filter;

    if (currentFilter === 'invert(100%)') {
        body.style.filter = '';
    } else {
        body.style.filter = 'invert(100%)';
    }
    """,
    .external
)