页面自适应

 1 // 自适应
 2 function autoScreen(){
 3     var font_size = 40;
 4     var col_num = 640 / font_size;
 5     var adapterSize = window.innerWidth / col_num;
 6     var htmlElement = document.getElementsByTagName("html")[0];
 7     htmlElement.style.fontSize = ‘‘ + adapterSize + ‘px‘;
 8     
 9     window.onresize=function (){
10         adapterSize = window.innerWidth / col_num;
11         htmlElement.style.fontSize = ‘‘ + adapterSize + ‘px‘;
12     }
13 };
14 autoScreen();