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49 lines
1.5 KiB

name: duk_call_method
proto: |
void duk_call_method(duk_context *ctx, duk_idx_t nargs);
stack: |
[ ... func! this! arg! ...! argN! ] -> [ ... retval! ]
summary: |
<p>Call target function <code>func</code> with an explicit <code>this</code>
binding and <code>nargs</code> arguments (not counting the function or
the <code>this</code> binding value). The function object, the <code>this</code>
binding value, and the function arguments are replaced by a single
return value. An error thrown during the function call is not
automatically caught.</p>
<p>If the target function is not strict, the binding value seen by the
target function may be modified by processing specified in
<a href="http://www.ecma-international.org/ecma-262/5.1/#sec-10.4.3">Entering Function Code</a>.
</p>
<p>This API call is equivalent to:</p>
<pre class="ecmascript-code">
var retval = func.call(this_binding, arg1, ..., argN);
</pre>
example: |
/* The target function here prints:
*
* this: 123
* 2 3
*
* and returns 5.
*/
duk_push_string(ctx, "(function(x,y) { print('this:', this); "
"print(x,y); return x+y; })");
duk_eval(ctx); /* -> [ ... func ] */
duk_push_int(ctx, 123);
duk_push_int(ctx, 2);
duk_push_int(ctx, 3);
duk_call_method(ctx, 2); /* [ ... func 123 2 3 ] -> [ ... 5 ] */
printf("2+3=%ld\n", (long) duk_get_int(ctx, -1)); /* prints 5 */
duk_pop(ctx);
tags:
- call
introduced: 1.0.0