v.js: fix for ..

compiler/gen_c.v

@@ -235,6 +235,11 @@ fn (p mut Parser) gen_for_str_header(i, tmp, var_typ, val string) {
 	p.genln('$var_typ $val = (($var_typ *) bytes_$tmp . data)[$i];')
 }
 
+fn (p mut Parser) gen_for_range_header(i, range_end, tmp, var_type, val string) {
+	p.genln(';\nfor (int $i = $tmp; $i < $range_end; $i++) {')
+	p.genln('$var_type $val = $i;')
+}
+
 fn (p mut Parser) gen_for_map_header(i, tmp, var_typ, val, typ string) {
 	def := type_default(typ)
 	p.genln('array_string keys_$tmp = map_keys(& $tmp ); ')

compiler/gen_js.v

@@ -34,7 +34,6 @@ fn (p mut Parser) gen_fn_decl(f Fn, typ, _str_args string) {
 }
 
 fn types_to_c(types []Type, table &Table) string {
-	println('js typ to code ')
 	mut sb := strings.new_builder(10)
 	for t in types {
 		if t.cat != .union_ && t.cat != .struct_ {
@@ -96,6 +95,11 @@ fn (p mut Parser) gen_for_header(i, tmp, var_typ, val string) {
 	p.genln('var $val = $tmp [$i];')
 }
 
+fn (p mut Parser) gen_for_range_header(i, range_end, tmp, var_type, val string) {
+	p.genln(';\nfor (var $i = $tmp; $i < $range_end; $i++) {')
+	p.genln('var /*$var_type*/ $val = $i;')
+}
+
 fn (p mut Parser) gen_for_str_header(i, tmp, var_typ, val string) {
 	p.genln('for (var $i = 0; $i < $tmp .length; $i ++) {')
 	p.genln('var $val = $tmp[$i];')

compiler/parser.v

@@ -2983,7 +2983,6 @@ fn (p mut Parser) for_st() {
 	next_tok := p.peek()
 	//debug := p.scanner.file_path.contains('r_draw')
 	p.open_scope()
-	i_type := if p.is_js { 'var' } else { 'int' }
 	if p.tok == .lcbr {
 		// Infinite loop
 		p.gen('while (1) {')
@@ -3147,9 +3146,8 @@ fn (p mut Parser) for_st() {
 		else if is_str {
 			p.gen_for_str_header(i, tmp, var_type, val)
 		}
-		else if is_range && !p.is_js {
-			p.genln(';\nfor ($i_type $i = $tmp; $i < $range_end; $i++) {')
-			p.genln('$var_type $val = $i;')
+		else if is_range {
+			p.gen_for_range_header(i, range_end, tmp, var_type, val)
 		}
 	}	else {
 		// `for a < b {`