Javascript jQuery-仅更改已单击的元素,而不是所有元素都具有相同的类
我想做的是更改对象的属性,但只更改该属性。因此,对于已单击的元素,类似于,Javascript jQuery-仅更改已单击的元素,而不是所有元素都具有相同的类,javascript,jquery,Javascript,Jquery,我想做的是更改对象的属性,但只更改该属性。因此,对于已单击的元素,类似于,$('.up img').attr(“src”,“img/up.png”),而不是所有具有.up img的元素 jQuery: $('.up img').click( function(){ var postDataUp = $(this).attr('mod'); $.post('/votePost.php', {varUp: postDataUp}, function(o){
$('.up img').attr(“src”,“img/up.png”)
,而不是所有具有.up img
的元素
jQuery:
$('.up img').click( function(){
var postDataUp = $(this).attr('mod');
$.post('/votePost.php', {varUp: postDataUp}, function(o){
console.log(o);
if(o == 1){
$('.up img').attr("src","img/up.png");
}else if(o == 2){
$('.up img').attr("src","img/up-g.png");
$('.down img').attr("src","img/dw.png");
}else if(o == 3){
$('.up img').attr("src","img/up.png");
}
}, 'json');
});
使用$(this)
而不是使用类选择器,只针对单击的类的特定元素
$('.up img').click( function(){
var postDataUp = $(this).attr('mod');
$.post('/votePost.php', {varUp: postDataUp}, function(o){
console.log(o);
if(o == 1){
$(this).attr("src","img/up.png");
}else if(o == 2){
$(this).attr("src","img/up-g.png");
$('.down img').attr("src","img/dw.png");
}else if(o == 3){
$(this).attr("src","img/up.png");
}
}, 'json');
});
试试这个-
$('.up img').click( function(){
var postDataUp = $(this).attr('mod');
var clicked = $(this);
$.post('/votePost.php', {varUp: postDataUp}, function(o){
console.log(o);
if(o == 1){
$(clicked).attr("src","img/up.png");
}else if(o == 2){
$(clicked).attr("src","img/up-g.png");
$('.down img').attr("src","img/dw.png");
}else if(o == 3){
$(clicked).attr("src","img/up.png");
}
}, 'json');
});
您可以更改代码以针对特定元素
$('.up img').click( function(){
var postDataUp = $(this).attr('mod');
// get the specific element that you have clicked.
// i use the $ before the name to easily identify jquery elements.
var $elm = $(this);
$.post('/votePost.php', {varUp: postDataUp}, function(o){
console.log(o);
if(o == 1){
// targeting the specific element
$elm.attr("src","img/up.png");
}else if(o == 2){
// targeting the specific element
$elm.attr("src","img/up-g.png");
$('.down img').attr("src","img/dw.png"); // not sure if you want to target individual element here?
}else if(o == 3){
// targeting the specific element
$elm.attr("src","img/up.png");
}
}, 'json');
});
如果您要将特定于所单击元素的
$('.down img')
作为目标,那么您可以使用$elm
元素遍历DOM节点。ElSinus,请不要尝试对人们的答案进行如此大的编辑。他试图删除您的最后几句话,并将var$elm更改为var elm(不知道为什么)
$('.up img').click( function(){
var $this=$(this);
var postDataUp = $this.attr('mod');
$.post('/votePost.php', {varUp: postDataUp}, function(o){
console.log(o);
if(o == 1){
$this.attr("src","img/up.png");
}else if(o == 2){
$this.attr("src","img/up-g.png");
$this.attr("src","img/dw.png");
}else if(o == 3){
$this.attr("src","img/up.png");
}
}, 'json');
});