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You can use simple for loop along with some if else condition to get the array’s first element in JavaScript.The logic is that, first of all check the array length is greater than 1 or not if the length is not equal to 1 that means there is no element in the array. So, go to the else condition and set the value undefined and print any message at the console. If there is an element in an array, set the first index value to any variable and terminate the loop with the help of break and print the message ... Read More
For this, use map() along with find(). Following is the code −Examplevar details1 = [ { productDetails: { isSold: true, productId:101 } }, { productDetails: { isSold: true, productId:103 } } ] var details2 = [ { productDetails: { isSold: false, productId:101 } } ] var details3 = details1.map(details1Object=>{ var newObject= details2.find(obj=>obj.productDetails.productId === details1Object.productDetails.productId) return newObject? newObject : details1Object }) console.log(details3)To run the above program, you need to use the following command −node fileName.js.Here, my file name is demo183.js.OutputThis will produce the following output −PS C:\Users\Amit\javascript-code> node demo183.js [ { productDetails: { isSold: false, productId: 101 } }, { productDetails: { isSold: true, productId: 103 } } ]
To declare and define multiple variables in one statement, you can use below syntax −var anyVariableName1=yourValue1, anyVariableName2=yourValue2, anyVariableName3=yourValue3, anyVariableName4=yourValue4, . . NExamplevar firstName="My First Name is David", lastName="My Last Name is Miller", place="I live in AUS"; console.log(firstName); console.log(lastName); console.log(place);To run the above program, you need to use the following command −node fileName.js.Here, my file name is demo182.js.OutputThis will produce the following output −PS C:\Users\Amit\javascript-code> node demo182.js My First Name is David My Last Name is Miller I live in AUSRead More
To check whether a checkbox is checked in jQuery, use the concept of toggle(). Following is the code −Example Live Demo Document Your name is Adam Smith $('#selectName').click(function() { $("#txtName").toggle(this.checked); }); To run the above program, just save the file name anyName.html(index.html) and right click on the file and select the option open with live server in VS Code editor.OutputThis will produce the following output −When you select the check box, the following will be the output −
Let’s say the following is our dropdown − John David Chris Mike Bob Carol Following is our array −var listOfNames = ["Chris", "Robert", "Mike"];To check whether the selected list value contains a value in array, use −$(‘select’).on(‘change’).Example Live Demo Document John David Chris Mike Bob Carol var listOfNames = ["Chris", "Robert", "Mike"]; $('select').on('change', function() { var name = this.value.split(' ')[0]; if($.inArray(name, listOfNames) > -1) { console.log('This is present in list ... Read More
To start a specific tablespace within a DB2 database we can use below panel command.START DATABASE (DSNDB01) SPACENAM(TABSPAC1)Using the START DATABASE command, we can also start database and indexspace.
A database contains multiple components like tablespace, indexspace, index, tables, etc. We can find out all the components within the database using the below panel command.DIS DB(DSNDB01)
There are multiple ways in which we can estimate the size of the DB2 database. Few of them are listed below−By using inbuilt get_dbsize_info function.By using DB2 active transaction logs.The size of the dataset which was used with UNLOAD utility can be checked.Table/Index dataUsing STOSPACE utility in JCL as below//STEP1 EXEC DSNUPROC //SYSIN DD * STOSPACE DATABASE DSNDB01 //*
The pending state is set when the image copy is required for the table space or when the INDEX is in rebuild status. In this case a COPY PENDING/ REBUILD PENDING flag is set. We can repair this state by using the below JCL step.//STEP010 EXEC DSNUPROC REPAIR SET INDEX IDX1 NORBDPENDThis utility can also be used to repair the tablespace. For this we can use the REPAIR SET TABLESPACE statement. This is followed by the name of index or tablespace.
The tablespace reorganization is used to reorganize the data present in the system in order to reclaim the free space. This free space can be utilized to store the new data and therefore reorganization is very useful from a memory utilization point of view. We can reorganize any tablespace using DB2 REORG utility in JCL step as below.//STEP1 EXEC DSNUPROC,UID='IUJLU101.REORG', //UTPRINT DD SYSOUT=* //SYSIN DD * REORG TABLESPACE (DBSET1.TABSPAC1) //*The REORG TABLESPACE statement is followed by the name of the tablespace which needs to be reorganized qualified by dabasebase.