jq使pc端单页适配全屏

`$(function(){ let doOnResize=()=>{ let width=$(window).width(); let zoomScale=width/1920; console.log(width); console.log(zoomScale); $('.loginBack').css({ 'position':'relative', '-transform-origin':'0 0', 'transform':'scale('+zoomScale+')' }); } doOnResize(); //对浏览器窗口调整大小触发 $(window).resize(()=>{ doOnResize(); }) })