hide方法是不是在ios上有兼容呢？

var webViewShow = function (viewId){
(viewId) ? viewId = viewId : viewId = 'xinHuaInformation.html';
plus.webview.hide(activeTab);
activeTab = viewId;
plus.webview.show(activeTab)
var kxHtml = plus.webview.getWebviewById('xinHuaInformationKx.html')
params.setKind = true;
mui.fire(kxHtml,'requestData',params);
plus.nativeUI.closeWaiting();
}