<!—->>==>=”body”><!–<button>stop</button>–></body><script>//1.使用timer模拟循环操作/*var display = true;var timer = setInterval(function(){if(!display){clearInterval(timer);}console.log(“hello”);},100);var stop = document.getElementById(“stop”);stop.onclick = function(){display = false;}*///2.img 对象 与imgDom 对象的差别/*var img = new Image();img.src = “1.jpg”;var imgDom = document.createElement(“img”);imgDom.src = “1.jpg”;var body = document.getElementById(“body”);body.appendChild(img);body.appendChild(imgDom);//二者在加入dom树后效果一致//加入后动态改变src又如何//img.src = “2.jpg”;//imgDom.src = “2.jpg”;//都能够实现：数据模型—>画面的单项绑定*///3.onload事件的机制，它是不是会被覆盖/*for(var i=1;i<=16;i++){var url = i+”.jpg”var img = new Image();img.src = url;img.onload = function(){console.log(img.width);}}*/var i = 1;url = i+”.jpg”var img = new Image();img.src = url;if(img.complete == true){console.log(img.width);i++;if(i>16){clearInterval(timer);}}},30);//结论：循环做法只有最后一张图能打印出来//使用timer做法可以正常进行</script></html>
，远离城市的喧嚣，寻找一份宁静，
