js 与jQuery 循环总结

$("img").each(function(i) {

this.src = "images/crm/pic" + i + ".PNG"

});

$.each($("img"), function(i, n) {

n.src = "images/crm/pic" + i + ".PNG"

})

//for (var 变量 in 对象)

var imgs = document.getElementsByTagName("img"); //获取img对象

for(i in imgs) {

imgs[i].src = "images/crm/pic" + i + ".PNG"

}

for(var i = 0; i < imgs.length; i++) {

imgs[i].src = "images/crm/pic" + i + ".PNG";

}