JS使字符串右击移动

罗分明网络博客 Web前端 3051
首次发布：2017-08-20
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<script type="text/javascript">
    var leftOrLight = 'left';
    window.onload = function () {
        setInterval(function () {
            //var titleValue = document.title;//获取标题这里没有用上
            var testp1 = document.getElementById('p1').value;
            if (leftOrLight == 'left') {
                var fistValue = testp1.charAt(0);
                var others = testp1.substring(1, testp1.length);
                document.getElementById('p1').value = others + fistValue;
            } else {
                var lastValue = testp1.charAt(testp1.length - 1);
                var others = testp1.substring(0, testp1.length - 1);
                document.getElementById('p1').value = lastValue + others;
            }
             
        }, 1000)
        document.getElementById('left').onclick = function () {
            leftOrLight = 'left';
        }
        document.getElementById('right').onclick = function () {
            leftOrLight = 'right';
        }
    };
</script>
 
<input id="left" type="button" value="left" />
<input id="right" type="button" value="right" />
<input id="p1" type="text" value="123456789" />