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29 lines
798 B
29 lines
798 B
name: duk_is_bound_function
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proto: |
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duk_bool_t duk_is_bound_function(duk_context *ctx, duk_idx_t idx);
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stack: |
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[ ... val! ... ]
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summary: |
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<p>Returns 1 if value at <code>idx</code> is a Function object which has
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been created with ECMAScript <code>Function.prototype.bind()</code>,
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otherwise returns 0. If <code>idx</code> is invalid, also returns 0.</p>
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<p>Bound functions are an ECMAScript concept: they point to a target
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function and supply a <code>this</code> binding and zero or more argument
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bindings. See
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<a href="http://www.ecma-international.org/ecma-262/5.1/#sec-15.3.4.5">Function.prototype.bind (thisArg [, arg1 [, arg2, ...]])</a>.
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</p>
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example: |
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if (duk_is_bound_function(ctx, -3)) {
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/* ... */
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}
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tags:
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- stack
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- function
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introduced: 1.0.0
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