$btn.click(function () {
try { var x = parseFloat($('#x').val()), y = parseFloat($('#y').val()), r; if (isNaN(x) || isNaN(y)) { throw new Error('输入有误'); } r = x + y; alert('计算结果：' + r); } catch (e) { alert('输入有误！'); } });
Sign in to make a reply
走进科学yycy
$btn.click(function () {
try { var x = parseFloat($('#x').val()), y = parseFloat($('#y').val()), r; if (isNaN(x) || isNaN(y)) { throw new Error('输入有误'); } r = x + y; alert('计算结果：' + r); } catch (e) { alert('输入有误！'); } });