<script type="text/javascript">
//判斷一個(gè)數(shù)是奇數(shù)還是偶數(shù)(看結(jié)果能否被2除凈, 應(yīng)該采用取余。)
var num = parseInt(prompt("輸入一個(gè)數(shù)字來(lái)判斷這個(gè)數(shù)是奇數(shù)還是偶數(shù)"));
if(num % 2 == 0) {
alert(num + "這個(gè)是數(shù)偶數(shù)");
} else {
alert(num + "這個(gè)數(shù)是奇數(shù)")
};
</script>