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JavaScript Open Source Web

AngularJS – Round off Number to Fixed Length of Fractions

Angular’s built in number filter allows one to specify the number of decimals that should be displayed. The syntax is as follows: {{val | number:<count>}} Where val is the value to be displayed, number is the filtername and count is the number of decimals to be displayed. For eg.: If val is 1234.56789 {{val | […]

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MongoDB Open Source Solutions Web

Creating users in MongoDB

Creating users in MongoDB is as simple as running the following commands: use db_name; db.createUser({ user: “user_name”, pwd: “password”, roles: [ “readWrite”, “dbAdmin” ] }) Here: db_name : Database Name user_name: Username of the user password: Password of the user roles: Roles of the user – Is an array and can be empty Eg. readWrite, dbAdmin, clusterAdmin, […]

Categories
FaceBook Open Source Web

How to stop videos from playing automatically in the Facebook News Feed?

Facebook’s video auto-play settings can be turned on or off. This will help you save bandwidth and help remove the distraction of an autoplaying video. To stop videos from playing automatically do the following: Go to your facebook timeline. From the top right of Facebook, click the  option and select Settings Click Videos in the […]

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JavaScript jQuery Web

JQuery: Join JSON arrays

The simplest way to merge JSON arrays usning JQuery is to use the concat function. var json1 = [{id: 1, name: “one”}]; var json2 = [{id: 2, name: “two”}, {id: 3, name: “three”}]; var finalObj = json1.concat(json2); Here finalObj will contain an array of 3 objects: [{id: 1, name: “one”},{id: 2, name: “two”}, {id: 3, […]

Categories
JavaScript jQuery Web

JQuery Check if Element Exists – JS Helpers

JQuery Check if Element Exists using this simple piece of code. To check this in the current page, we need to check the length of the element returned by the JQuery selector, if it returns you something then the element must exists otherwise no. if( $(‘#EleSelector’).length ) { // use this if you are using […]