js中switch 语句的用法

Posted 2022-01-19 尔嵘

语法如下：

switch(表达式) 
     case n:
        代码块
        break;
     case n:
        代码块
        break;
     default:
        默认代码块
 

实例：

let netType = $("#disabledSelect1").find("option:selected").val(), 
    jsonObj = 
        "Id": this.selectLiNum,
	    "Enable": $("input[name='enableChuan']").is(':checked') ? true : false,
	    "Parameter": 
	        "Baudrate": Number($("input[name='baudrateHost']").val()),
		    "DataBit": Number($("input[name='dataBitHost']").val()),
		    "Parity": Number($("input[name='parityHost']").val()),
		    "StopBit": Number($("input[name='stopBitHost']").val())
	    ,
	    "EnableModbusTCP2RTU": $("input[name='enableMtcpToRtu']").is(':checked') ? true : false,
	    "TsNetType": $("#disabledSelect1").find("option:selected").val(),
	    "TsNetParameter": 
										
	    	
    ;

//往jsonObj的TsNetParameter传入不同的东西
switch (netType) 
    case ("1"):
        jsonObj['TsNetParameter'] = 
		    "RemoteIP": $("input[name='remoteIpHost']").val(),
			"RemotePort": Number($("input[name='remotePortHost']").val())
		;
	break;
	case ("2"):
		jsonObj['TsNetParameter'] = 
			"LocalPort": Number($("input[name='localPortHost']").val())
		;
	break;
	case ("3"):
		jsonObj['TsNetParameter'] = 
			"RemoteIP": $("input[name='remoteIpHost']").val(),
			"RemotePort": Number($("input[name='remotePortHost']").val())
		;
	break;
	case ("4"):
	    jsonObj['TsNetParameter'] = 
		    "LocalPort": Number($("input[name='localPortHost']").val())
		;
	break;
	case ("5"):
		jsonObj['TsNetParameter'] = 
			"ClientId": $("input[name='clientIdHost']").val(),
			"HeartFrame": 
				"Cycle": Number($("input[name='cycleHost']").val()), 
				"Enable": $("input[name='heartEnableHost']").is(':checked') ? true : false, 
				"Frame": $("input[name='heartFrameHost']").val()
			,
			"KeepAlive": Number($("input[name='keepAliveHost']").val()),
			"Passwd": $("input[name='passwdHost']").val(),
			"RegisterFrame": 
				"Enable": $("input[name='enableRegisterHost']").is(':checked') ? true : false,
				"Frame": $("input[name='registerFrameHost']").val(),
            
		,
									
	break;
	case ("6"):
		jsonObj['TsNetParameter'] = 
            "ActiveCmd": $("input[name='httpActiveCmdHost']").val(),
		;
	break;
	default:
		return;