Ios5 iOS UIWebView中的wysihtml5文本编辑器

我正在尝试使用wysihtml5的一个简单实现来执行富文本编辑（并直接存储html以便能够以标准格式保存格式）

为此，我已经像这样实现了wysihtml5

<form>
    <textarea id="textarea"></textarea>
</form>

<script src="./wysihtml5/parser_rules/simple.js"></script>
<script src="./wysihtml5/dist/wysihtml5-0.3.0.js"></script>
<script>    
  var editor = new wysihtml5.Editor("textarea", {
    parserRules:    wysihtml5ParserRules,
    useLineBreaks:  false
  });
</script>

但是，set和get都不起作用（总是返回空字符串）。 有什么线索吗

- (void)insertHTMLContent:(NSString *)HTMLBody
{
    if (HTMLBody) {
        NSString *query = [NSString stringWithFormat:@"editor.composer.commands.exec('insertHTML', '%@')", HTMLBody];
        [self stringByEvaluatingJavaScriptFromString:query];
    }
}

- (NSString *)getContentHtml {
    return [self stringByEvaluatingJavaScriptFromString: @"editor.getValue()"];
}

- (void)insertHTMLContent:(NSString *)HTMLBody
{
    if (HTMLBody) {
        NSString *query = [NSString stringWithFormat:@"editor.composer.commands.exec('insertHTML', '%@')", HTMLBody];
        [self stringByEvaluatingJavaScriptFromString:query];
    }
}

- (NSString *)getContentHtml {
    return [self stringByEvaluatingJavaScriptFromString: @"editor.getValue()"];
}