Android(安卓)webview 加载H5时,隐藏掉不需要的元素

h5加载完成时回调override fun onPageFinished(view: WebView?, url: String?) {    super.onPageFinished(view, url)    view?.loadUrl("javascript:" + loadJs() + ";")}

fun loadJs(): String {    var js = "var newscript = document.createElement(\"script\");"    js += "document.getElementsByClassName('ads-head')[0].style.display='none';"    js += "document.getElementsByClassName('ads-cont')[0].style.display='none';"    js += "document.getElementsByClassName('ads-foot')[0].style.display='none';"    js += "document.getElementById('ads_tw').style.display='none';"    js += "document.getElementById('pi').style.display='none';"    // 通过控件id，直接获取元素    js += "document.querySelectorAll('.container>div')[4].style.display='none';"     //表示类container下的child div,然后取第四个孩子    js += "document.querySelectorAll('.cont>div')[3].style.display='none';"    js += "document.getElementsByClassName('list')[3].style.display='none';"    js += "document.getElementsByClassName('ads-nav')[0].style.display='none';"    //表示控件用的class ,然后取控件    js += "document.getElementsByClassName('ads-bot')[0].style.display='none';"    js += "document.getElementsByClassName('headbar')[0].style.display='none';"    js += "document.body.appendChild(newscript);"    return js}

. 表示引用class

# 表示引用id，找控件

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