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26 lines
711 B
26 lines
711 B
name: duk_opt_c_function
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proto: |
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duk_c_function duk_opt_c_function(duk_context *ctx, duk_idx_t idx, duk_c_function def_value);
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stack: |
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[ ... val! ... ]
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summary: |
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<p>Get the Duktape/C function pointer (a <code>duk_c_function</code>) from an
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Ecmascript function object associated with a Duktape/C function. If the
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value is <code>undefined</code> or the index is invalid, <code>def_value</code>
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default value is returned. In other cases (<code>null</code> or non-matching
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type) throws an error.</p>
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example: |
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duk_c_function funcptr;
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/* Native callback, default to nop_callback. */
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funcptr = duk_opt_c_function(ctx, -3, nop_callback);
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tags:
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- stack
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- function
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introduced: 2.1.0
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