<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>每天一个JavaScript实例-获取元素当前高度</title> <style> #date{width:90%;height:25%;padding:10px;background: red;} </style> <script> window.onload = function(){ var height = getHeight(); console.log(height); } function getHeight(){ var height = 0; var div = document.getElementById("date").getBoundingClientRect(); if(div.height){ height = div.height; }else{ height = div.bottom - div.top; } return height; } </script> </head> <body> <div> <div id = "date"> </div> </div> </body> </html>