var bbb = document.getElementById('btn1')
bbb.onclick = function() {
var ttt = document.getElementById('btn1').value
if (ttt == '提交') {
isreadonly()
changebutton1()
} else if (ttt == '继续添加') {
readwrite()
changebutton2()
}
}
function isreadonly() {
var obj = document.getElementById("in1")
obj.setAttribute("readOnly", true)
obj.style.backgroundColor = "#d2d2d2"
var obj = document.getElementById("in2")
obj.setAttribute("readOnly", true)
obj.style.backgroundColor = "#d2d2d2"
var obj = document.getElementById("in3")
obj.setAttribute("readOnly", true)
obj.style.backgroundColor = "#d2d2d2"
}
function readwrite() {
var obj = document.getElementById("in1")
obj.setAttribute("readOnly", false)
obj.style.backgroundColor = "#ffffff"
var obj = document.getElementById("in2")
obj.setAttribute("readOnly", false)
obj.style.backgroundColor = "#ffffff"
var obj = document.getElementById("in3")
obj.setAttribute("readOnly", false)
obj.style.backgroundColor = "#ffffff"
}
function changebutton1() {
document.getElementById('btn1').value = '继续添加'
}
function changebutton2() {
document.getElementById('btn1').value = '提交'
}
应用:可将上诉代码中的文字替换,实现其它类型的循环执行。
var picID = 0//换成网页中那幅图在picURL中的序号(记得要从0开始数)var picURL = ["images/img1.jpg","images/img2.jpg","images/img3.jpg"]//将图片链接地址放进来,数量随意
function showimg(str){
if(str=="L"){
if(picID==0){
picID = picURL.length-1
document.getElementById("advimg").src = picURL[picID]
}else{
document.getElementById("advimg").src = picURL[--picID]
}
}else if(str=="R"){
if(picID==(picURL.length-1)){
picID = 0
document.getElementById("advimg").src = picURL[picID]
}else{
document.getElementById("advimg").src = picURL[++picID]
}
}
}
使用jQuery的话,相对就比较简单。jQuery有个toggle(fn, fn2, [fn3, fn4, ...])
其中fn,fn2,fn3....为对应的点击次数所执行的事件。
即第一次点击执行fn函数,第二次点击执行fn2函数,依此类推。
当结束最后一此点击的函数后,继续点击将从第一次点击开始。