在jQuery中有一个$.each循环的范围问题.如何在函数中获取一个全局变量来设置循环或至少传递一些东西呢？
var some_function = function() {
// false by default
var something = false;
$.each(array,function(key,val) {
if (val == 'something')
{
// even if one item evaluates true I need to check outside of the loop
something = true;
}
});
if (something == true)
{
// do something else,but always false
}
}
因为我需要评估数组中的所有项目,如果只有一项是真的,那么在$.each之外做一些额外的事情.
更新
$(document).ready(function () {
something();
$(':radio').trigger('change');
)};
好的,这是实际的代码.它在底部警告“假”,然后两次警告“你好”,好像它按相反顺序发出.
var something = function() {
var q_radios = {
'radio1' : 'radio1_selector','radio2' : 'radio2_selector',};
var show_me = false;
$.each(q_radios,function(name,q_selector) {
$('input:radio[name=' + q_selector + ']').change(function() {
show_me = true;
alert('hello');
});
});
if (show_me == true)
{
alert('yes');
}
else
{
alert('false');
}
};
解决方法
或多或少,正是你现在拥有的……你只需要将数据传递给函数(通过让它接受一个参数).见
a live example.
var some_function = function(array) {
// false by default
var something = false;
$.each(array,val) {
if (val == 'something') {
something = true;
}
});
if (something == true) {
alert("There was a something");
} else {
alert("There wasn't a something");
}
};
some_function([1,2,3]);
some_function([1,"something",3]);
