第一种方法：
<script>
var a = "-1233";
alert(parseInt(a)==a);
</script>
第二种方法：
<script>
var a = "12-33";
var re = /^[-]{0,1}[0-9]{1,}$/;
alert(re.test(a));
</script>
↧
JS验证是否整数（含负数）
↧
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