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HTML文字列のスペースを減らしたかったのです。以下は、使用しているコードです

  NSString *headerString = @"<header><meta name='viewport' content='width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no'></header>";
    headerString = [headerString stringByAppendingString:htmlstring];
    headerString = [headerString stringByReplacingOccurrencesOfString:@"<br><br/><br/><br><br/><br/>" withString:@"<br><br/>"];
    headerString = [headerString stringByReplacingOccurrencesOfString:@"<br><br/><br><br/>" withString:@"<br><br/>"];
 [webviewkit loadHTMLString:headerString baseURL:nil];

私もJavascriptを使用してみましたが、複数の行間隔ではなく1行の間隔のみを与えるJavaスクリプトを正確に渡す必要があるかどうかはわかりません:

- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation {
 [webView evaluateJavaScript:@"document.open();document.close()" completionHandler:^(id _Nullable stringresult, NSError * _Nullable error) {
        NSLog(@"result=>%@ error->%@",stringresult,error);
    }];
}

しかし、間隔を適切に削除することはできません。

<header><meta name='viewport' content='width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no'></header><div><span style="font-size: 16px;"><span style="font-size: 16px; font-family: Arial;">Hello and welcome to XYZ session!&nbsp;&nbsp;</span><br><br/><span style="font-family: Arial;">Over the next three Hello world.&nbsp; Spacing takes alot of spaces over here due to span , br and div tags.</span><br><br/><span style="font-family: Arial;">Thank you again for agreeing to participate and helping the discussion....</span><br><br/><span style="font-family: Arial;">Over here,</span><br><br/></span></div><br/><ul><br/>    <li><span style="font-size: 16px;"><span style="font-family: Arial;">I will be posting questions over here in stack overflow&nbsp;</span><br><br/>    </span></li><br/>    <li><span style="font-size: 16px;"><span style="font-family: Arial;">Throughout the day I will read everyone's responses and sometimes respond with my own follow-up questions.&nbsp;</span><br><br/>    </span></li><br/>    <li><span style="font-size: 16px;"><span style="font-family: Arial;">Please be i request to provide the code in objective c</span><br><br/>    </span></li><br/>    <li><span style="font-size: 16px;"><span style="font-family: Arial;">Lorem Ipsum is simply dummy text of the printing and typesetting industry. &nbsp;</span><br><br/>    </span></li><br/>    <li><span style="font-size: 16px;"><span style="font-family: Arial;">Lorem Ipsum is simply dummy text of the printing and typesetting industry. </span><br><br/>    </span></li><br/>    <li><span style="font-size: 16px; font-family: Arial;">Lorem Ipsum is simply dummy text of the printing and typesetting industry. </span></li><br/></ul>
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