wym1581的专栏

dragenter：当拖拽对象进入投放区时触发；.dragover：拖拽对象在投放区内移动时触发；.dragleave：拖拽对象没有投放到投放区，离开投放区的时候触发；.drop：拖拽对象投放在投放区时触发。.dragstart：当元素拖拽开始触发；drag：在元素拖拽过程中触发；.dragend：元素拖拽结束时触发。使用dataTransfer传递数据data

#box{ width:150px;height:150px;border:1px dashed red; font-size:13px;line-height:150px;text-align:center; } window.onload=function () { var box=document.getElementById("box");

if(window.webkitNotifications){ window.webkitNotifications.requestPermission(); if(window.webkitNotifications.checkPermission()==0){ var obj=window.webkitNotifications.createNotificat

svg的一些形状：矩形：<rect x="20" y="20" width="250" height="250"style="fill:blue;stroke:pink;stroke-width:5;fill-opacity:0.1;stroke-opacity:0.9"/>圆形：<circle cx="100" cy="50" r="40" stroke="black"st

canvas{ background:#ccc; } noTitle window.onload=function () { var canvas=document.getElementById("canvas");//获取canvas对象 var cobj=canvas.getContext("2d");//

canvas{ background:#ccc; } noTitle window.onload=function () { var canvas=document.getElementById("canvas"); var cobj=canvas.getContext("2d");// cobj.strokeSty

canvas{ background:#ccc; } 心跳 window.onload=function () { var canvas=document.getElementById("canvas"); var cobj=canvas.getContext("2d"); cobj.arc(200

canvas{ background:#eee; } 时钟 window.onload=function () { var canvas=document.getElementById("canvas"); var cobj=canvas.getContext("2d"); var originx=200; v

canvas{ background:#eee; margin:30px 400px; } 时钟完整版 window.onload=function () { var canvas=document.getElementById("canvas"); var cobj=canvas.getContext("2d"); v