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, […]
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 […]
For a check box with the id “checkbox”, here is how to check if its checked: $(‘#checkbox’).is(‘:checked’); // Returns True if checked else False
Here is the code to remove duplicates from an Array: var distinctVal = function(arr){ var newArray = []; for(var i=0, j=arr.length; i<j; i++){ if(newArray.indexOf(arr[i]) == -1) newArray.push(arr[i]); } return newArray; };
To check if a variable(a) has the value null, use the following code: if (a === null) // Best way to do it! if (a == null) // This does return true if a is null but it returns true also if a is undefined… so avoid it To check if a variable(a) has the […]