js實現點擊掉落特效 先看看效果圖
話不多說代碼
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<!DOCTYPE HTML><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>無標題文檔</title><script src="jquery.js"></script><script>window.onload = function () { var str = ''; var len = 20; var aDiv = document.getElementsByTagName('div'); var timer = null; var num = 0; for ( var i=0; i<len; i++ ) { str += '<div style="width:50px; height:50px; background:red; position:absolute; top:0px; left:'+ i*60 +'px;"></div>'; } document.body.innerHTML = str; document.onclick = function () { clearInterval( timer ); timer = setInterval( function (){ DM( aDiv[num], 'top', 23, 500 ); num ++; if ( num === len ) { clearInterval( timer ); } }, 100 ); };};</script></head><body></body></html> |
我這里引用了封裝方法
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function DM( obj, attr, dir, target, endFn ) { dir = parseInt(getStyle( obj, attr )) < target ? dir : -dir; clearInterval( obj.timer ); obj.timer = setInterval(function () { var speed = parseInt(getStyle( obj, attr )) + dir; // 步長 if ( speed > target && dir > 0 || speed < target && dir < 0 ) { speed = target; } obj.style[attr] = speed + 'px'; if ( speed == target ) { clearInterval( obj.timer ); /* if ( endFn ) { endFn(); } */ endFn && endFn(); } }, 30);} |
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原文鏈接：https://blog.csdn.net/qq_38259997/article/details/103764058
