jquery - use a variable outside the function
37,691
Solution 1
Just declare that variable in constructor's scope:
$(function() {
var bwr_w = null;
function init() {
bwr_w = $(window).width();
}
init();
$('#button').click(function() {
alert('The Browser Height is' + bwr_w);
});
});
Solution 2
try this
$(function() {
var bwr_w = 0;
function init() {
bwr_w = $(window).width();
}
init();
$('#button').click(function() {
alert('The Browser Height is' + bwr_w);
});
});
Solution 3
If you declare the variable outside the function, then assign a value to it inside the function, it should be accessible elsewhere. So long as you're sure that a value will be assigned. If you're not sure, you might want to assign a default value:
$(function() {
var bwr_w; // or 'var bwr_w = default_value;'
function init() {
bwr_w = $(window).width();
}
init();
$('#button').click(function() {
alert('The Browser Height is' + bwr_w);
});
});
Author by
user705730
Updated on July 05, 2022Comments
-
user705730 almost 2 years
How I Can use a variable outside the function where it was declared?
$(function() { function init() { var bwr_w = $(window).width(); } init(); $('#button').click(function() { alert('The Browser Height is' + bwr_w); }); });
If I click on the button I get this error:
bwr_w is not defined