我正在尝试在5张图像上制作模态内容,我已经尝试了几个小时以使用for循环来缩短代码,但是我仍然有很多行不知道如何缩短。我只是从javascript开始。这是我的下面代码,可以正常工作,但时间太长。
var modal = [];
for (i=0; i<5; i++)
{
modal[i] = document.getElementById('simplemodal'+i);
}
var modalbtn = [];
for (i=0; i<5; i++) {
modalbtn[i] = document.getElementById('pics-post'+i);
modalbtn[i].addEventListener('click', eval('openmodal'+i));
window.addEventListener('click', eval('clickoutside'+i));
}
var closebtn0 = document.getElementsByClassName('closebtn')[0];
var closebtn1 = document.getElementsByClassName('closebtn')[1];
var closebtn2 = document.getElementsByClassName('closebtn')[2];
var closebtn3 = document.getElementsByClassName('closebtn')[3];
var closebtn4 = document.getElementsByClassName('closebtn')[4];
for (i=0; i<5; i++) {
eval('closebtn'+i.addEventListener('click', eval('closemodal'+i)));
}
function openmodal0(){
modal[0].style.display = 'block';
}
function openmodal1(){
modal[1].style.display = 'block';
}
function openmodal2(){
modal[2].style.display = 'block';
}
function openmodal3(){
modal[3].style.display = 'block';
}
function openmodal4(){
modal[4].style.display = 'block';
}
function closemodal0(){
modal[0].style.display = 'none';
}
function closemodal1(){
modal[1].style.display = 'none';
}
function closemodal2(){
modal[2].style.display = 'none';
}
function closemodal3(){
modal[3].style.display = 'none';
}
function closemodal4(){
modal[4].style.display = 'none';
}
function closemodal5(){
modal[5].style.display = 'none';
}
function clickoutside0(e){
if(e.target == modal[0])
modal[0].style.display = 'none';
}
function clickoutside1(e){
if(e.target == modal[1])
modal[1].style.display = 'none';
}
function clickoutside2(e){
if(e.target == modal[2])
modal[2].style.display = 'none';
}
function clickoutside3(e){
if(e.target == modal[3])
modal[3].style.display = 'none';
}
function clickoutside4(e){
if(e.target == modal[4])
modal[4].style.display = 'none';
}
我试图使用eval来增加变量名,但找不到正确的方法来使它起作用。
您可以将所有内容放入一个循环中并使用匿名函数。
var modal = [];
var modalbtn = [];
var closebtn = [];
for (i=0; i<5; i++) {
modal[i] = document.getElementById('simplemodal'+i);
modalbtn[i] = document.getElementById('pics-post'+i);
modalbtn[i].addEventListener('click', () => {
modal[i].style.display = 'block';
});
window.addEventListener('click', eval('clickoutside'+i));
closebtn[i] = document.getElementsByClassName('closebtn')[i];
closebtn[i].addEventListener('click', () => {
modal[i].style.display = 'none';
});
}
您可以将模式编号/ id作为参数传递给函数。这样,对于所有模态,每个动作只需要一个功能。
modalbtn[i].addEventListener('click', function () {
openmodal(i);
}
function openmodal(modalId) {
modal[modalId].style.display = 'block';
}
您还可以将一个类添加到您的模式中,然后将事件侦听器绑定到该类的所有内容。然后使用数据属性或使用ID(如果需要)来获取特定的模式。
您可以使用通用功能来打开和关闭模型,例如:
function openmodel (i) {
model[i].style.display = 'block'
}
function clickoutside(e, i){
if(e.target == modal[i])
modal[i].style.display = 'none';
}
并更改您的事件监听器,例如:
modalbtn[i].addEventListener('click', function () {
openmodel(i)
})
window.addEventListener('click', function (e) {
clickoutside(e, i)
})
并且对此感兴趣
eval('closebtn'+i.addEventListener('click', eval('closemodal'+i)))
您可以使用:
var closebtn = document.getElementsByClassName('closebtn')
for (let i = 0; i < closebtn.length; i++) {
closebtn[i].addEventListener('click', function () {
closeModel(i)
})
}
并更改closeModel函数,如:
function closemodal(i){
modal[i].style.display = 'none';
}