避免input输入框输入时底部导航栏被软键盘撑挤上来

//获取原始窗口的高度var originalHeight=document.documentElement.clientHeight || document.body.clientHeight;//console.info("原始窗口的高度"+originalHeight);window.onresize=function(){//软键盘弹起与隐藏  都会引起窗口的高度发生变化    var resizeHeight=document.documentElement.clientHeight || document.body.clientHeight;    //console.info("软键盘弹起后窗口的高度"+resizeHeight);if(resizeHeight*1<originalHeight*1){ //resizeHeight<originalHeight证明窗口被挤压了plus.webview.currentWebview().setStyle({                height:originalHeight            });}}