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=proto
int duk_get_top_index(duk_context *ctx);
=summary
<p>Get the absolute index (>= 0) of the topmost value on the stack.
If the stack is empty, returns <code>DUK_INVALID_INDEX</code>.</p>
=example
int idx_top;
idx_top = duk_get_top_index(ctx);
if (idx_top == DUK_INVALID_INDEX) {
printf("stack is empty\n");
} else {
printf("index of top element: %d\n", idx_top);
}
=tags
stack
=seealso
duk_require_top_index