如何调用JavaScript函数，该功能使用Swift WebView返回body中的HTML字符串

我有一个HTML文件，该文件是在呼叫身体中的JavaScript fucntion后生成的。我需要从HTML中删除JavaScript调用，并使用WebView代表从Swift拨打它。我尝试使用StringByEvaluatingJavaScript，但它不起作用。我正在添加具有JavaScript函数的HTML文件。

<!DOCTYPE html>
<html>
<head>
  <title>Complete Blood Count</title>
  <link href="https://www.fontify.me/wf/4dae5b9279578bbce15473cde2ae897f" rel="stylesheet" type="text/css">
  <style type="text/css">
    body {
      font-family: "font92727";
    }
    .main-box {
        width: 96%;
        display: inline-block;
        margin: 0 auto;
        padding: 0;
        position: absolute;
        font-size: 3em;
    }
    .image-box {
        display: inline-block;
    }
    .image-box img {
        width: 100%;
        height: inherit;
        display: inline-block;
    }
    .value-box {
    }
    .value-inner-box.wbc {
        position: absolute;
        left: 12%;
        top: 37%;
        text-align: center;
    }
    .value-inner-box.hbc {
        position: absolute;
        left: 46%;
        top: 15%;
        text-align: center;
    }
    .value-inner-box.hct {
        position: absolute;
        left: 46%;
        top: 60%;
        text-align: center;
    }
    .value-inner-box.plt {
        position: absolute;
        left: 82%;
        top: 37%;
        text-align: center;
    }
    @media screen and (max-width: 1920px) and (min-width: 1025px), (min-width: 2048px) {
        .main-box {
          font-size: 6em;
        }
    }
  </style>  
</head>
<body>
<script type="text/javascript">
    
    document.write(cbc({ wbc: 14.0, wbcCol:'red', hgb: 12.0, hbcCol:'orange', hct: 12.0, hctCol: 'blue', plt: 12.4, pltCol: 'green'}));
    function cbc(cbcdata) {
      var output = "";
        
      var wbc0 = cbcdata.wbc;
      var hgb0 = cbcdata.hgb;
      var hct0 = cbcdata.hct;
      var hct0 = cbcdata.plt;
      var wbcC0 = cbcdata.wbcCol;
      var hbcC0 = cbcdata.hbcCol;
      var hctC0 = cbcdata.hctCol;
      var pltC0 = cbcdata.pltCol;
      output = output + "<div class='main-box'>";
      output = output + "<div class='image-box'>";
      output = output + "<img src='cbc2x.png'>";
      output = output + "</div>";
      output = output + "<div class='value-box'>";
      output = output + "<div class='value-inner-box wbc'>";
      output = output + "<div class='vale-labellabel' style ='color:"+wbcC0+"'>WBC</div>";
      output = output + "<div class='value-text' style ='color:"+wbcC0+"'>" + wbc0 +"</div>";
      output = output + "</div>";
      output = output + "<div class='value-inner-box hbc'>";
      output = output + "<div class='vale-labellabel' style ='color:"+hbcC0+"'>HBC</div>";
      output = output + "<div class='value-text' style ='color:"+hbcC0+"'>" + hgb0 +"</div>";
      output = output + "</div>";
      output = output + "<div class='value-inner-box hct'>";
      output = output + "<div class='vale-labellabel' style ='color:"+hctC0+"'>HCT</div>";
      output = output + "<div class='value-text' style ='color:"+hctC0+"'>" + hct0 +"</div>";
      output = output + "</div>";
      output = output + "<div class='value-inner-box plt'>";
      output = output + "<div class='vale-labellabel' style ='color:"+pltC0+"'>PLT</div>";
      output = output + "<div class='value-text' style ='color:"+pltC0+"'>" + hct0 +"</div>";
      output = output + "</div>";
      output = output + "</div>";
      return output;
    } 
</script>
</body>
</html>

func webViewDidFinishLoad(webView: UIWebView) {
        
        if((javaScriptCalledDict.objectForKey(dataSourceArray![webView.tag] as! String) as! Bool) == false){
            let jsString = String(format:"cbc({ wbc: 14.0, wbcCol:'red', hgb: 12.0, hbcCol:'orange', hct: 12.0, hctCol: 'blue', plt: 12.4, pltCol: 'green'})")
            webView.stringByEvaluatingJavaScriptFromString(jsString)!
            javaScriptCalledDict.setObject(true, forKey: dataSourceArray![webView.tag] as! String)
        }
        
        
    }

这是用传递给JS函数的固定值渲染的HTML。我需要用我的参数调用JS功能。任何人都可以建议HTML或我的Swift代码中的任何更改。

您只需要更改：

let htmlReturned = webView.stringByEvaluatingJavaScriptFromString(jsString)!

这里的JSString将等于您的JavaScript函数的名称。但是，此问题和WebView的问题是，您不能将对象值从iOS代码传递到JavaScript函数(至少我知道，如果可以的话，请证明我是错的:)(。需要更改功能签名以接受字符串和数字

function cbc(wbc, wbcCol, hgb, hbcCol, hct, hctCol, plt, pltCol){}

最终会以：

let htmlReturn = webview.stringByEvaluatingJavascriptFromString("cbc(14, "red", 12, "orange", 12, "blue", 12.4, "green")")

相关内容

最新更新

热门标签：