The interpolateObject() function in D3.js is used to return the interpolator function between the two objects given. If any property of “b” exists in “a” then a generic interpolator is created for both “a” and “b” using interpolation.
Syntax:
d3.interpolateObject(a, b);
Parameters: There are two parameters given below:
- a: It is the Javascript object.
- b: It is also the Javascript Object.
Returns: It returns the interpolation function of the two objects.
Below given are a few examples of the above function.
Example 1:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <style> </style> <body> <!--Fetching from CDN of D3.js --> <script type = "text/javascript" </script> <script> let obj1={ "a": 10, "b": 20, "c": 30 } let obj2={ "a": 40, "b": 50, "d": 60, "e": 70 } let interpolationFunction= d3.interpolateObject(obj1, obj2); /* Note the property d and e will not change as they are not present in obj1*/ console.log(interpolationFunction(0)) console.log(interpolationFunction(0.5)) console.log(interpolationFunction(1)) console.log(interpolationFunction(1.5)) console.log(interpolationFunction(2)) console.log(interpolationFunction(2.5)) console.log(interpolationFunction(3)) </script> </body> </html> |
Output:
Example 2:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <style> </style> <body> <!--Fetching from CDN of D3.js --> <script type = "text/javascript" </script> <script> console.log("When obj a is not given") console.log(d3.interpolateObject({}, {"a":1, "b":2})(0.5)) console.log(d3.interpolateObject({}, {"a":1, "b":2})(1)) console.log(d3.interpolateObject({}, {"a":1, "b":2})(2)) console.log("When no property of obj b exists in obj a") console.log( d3.interpolateObject({"c":4, "d":3}, {"a":10, "b":12})(5)) console.log("When both objects are empty object") console.log(d3.interpolateObject({}, {})(5)) </script> </body> </html> |
Output:
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