19 lines
779 B
JavaScript
19 lines
779 B
JavaScript
function getRandomInt(min, max) {
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return Math.floor(Math.random() * (max - min)) + min;
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}
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function mainbg() {
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let bg_list_pc = ["bg/1.jpg", "bg/2.jpg", "bg/3.jpg"];
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let bg_list_m = ["bg/11m.jpg", "bg/12m.jpg", "bg/13m.jpg", "bg/21m.jpg", "bg/31m.jpg", "bg/32m.jpg", "bg/33m.jpg"];
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const pageWidth = document.documentElement.scrollWidth;
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const pageHeight = document.documentElement.scrollHeight
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if (pageWidth > pageHeight) {
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num_bg = getRandomInt(0, 2);
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bg_select = bg_list_pc[num_bg]
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} else {
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num_bg = getRandomInt(0, 6);
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bg_select = bg_list_m[num_bg]
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}
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document.getElementById('page').style.background = '#000000 url('+bg_select+') repeat';
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document.getElementById('page').style.backgroundSize = '120%';
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} |