js实现月份左右切换

分手后的思念是犯贱 2022-05-27 05:20 309阅读 0赞

效果图：

![70][]

点击左右边的箭头，实现上一月或者下一月的切换。

jsp内容

<table id="querytable" style="border:1px;">
        <tr>
            <td style="width: 20%;">
                <span class="leftspan">
                	<span style="color:#FF0000;">
                		<img src="img/left.jpg" style="height:35px; width:35px;" οnclick="reduceMonth()"/>
                	</span>
    	    </span>
    	</td>
    	<td align="center">
    		<label id="beginTime" class="kbtn" style="height:100px; width:200px;font-size: 35px;">	
    		</label>
    	</td>
    	<td style="width: 20%;" align="right">
    	    <span class="rightspan">
                	<span style="color:#FF0000;">
                		<img src="img/right.jpg" style="height:35px; width:35px;" οnclick="addMonth()" />
                	</span>
    	    </span>
    	</td>
        </tr>
    </table>

说明：

1）、箭头图片可以自行从网上下载

js内容

//月份加减处理
    function addMonth() {
    	var s = document.getElementById("beginTime").innerHTML;
    	var arr = s.split("-");
    	var year = parseInt(arr[0]);
    	var month = parseInt(arr[1]);
    	//判断month
    	if (month == 12) {
    		year = year + 1;
    		month = 1;
    	} else {
    		month = month + 1;
    	}
    	document.getElementById("beginTime").innerHTML = year + "-" + month;
    	initTable(year, month-1);
    }
    
    function reduceMonth() {
    	var s = document.getElementById("beginTime").innerHTML;
    	var arr = s.split("-");
    	var year = parseInt(arr[0]);
    	var month = parseInt(arr[1]);
    	console.log(year + "/" + month);
    	//判断month
    	if (month == 1) {
    		year = year - 1;
    		month = 12;
    	} else {
    		month = month - 1;
    	}
    	document.getElementById("beginTime").innerHTML = year + "-" + month;
    	initTable(year, month-1);
    }

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参考文章

https://blog.csdn.net/sinat\_16463137/article/details/61925606

[70]: /images/20220527/04b9cb7490584dee81acdf553eaa07b1.png