Javascript在WebView - Android中不起作用

webView.getSettings().setJavaScriptEnabled(true);

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
    webView.getSettings().setJavaScriptEnabled(true);
} else {
    webView.getSettings().setJavaScriptEnabled(false);
}

webView.setWebViewClient(new WebViewClient() {
    @Override
    public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
        // 处理加载错误
    }
});

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
    webView.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
}