html中rem布局后,在背景图片压缩后,根据压缩比例计算代码
<script type="text/javascript">
$(document).ready(function() {
var tWidth = $(window).width();
var tHeight = $(window).height();
var dpi_w = tWidth / 640;
var dpi_h = tHeight / 1008;
$("img").each(function() {
$(this).width($(this).width() * dpi_w);
$(this).height($(this).height() * dpi_h);
});
});
</script>
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