Bind method: Using this method, we can bind an object to a common function, so that gives different result when its needed. The bind() method takes an object as an argument and creates a new function. So basically bind function return function.
Let’s understand when bind method is used.
bind the object with common function
Example 1:
Javascript
<script> const gfg = { name: "javascript", content: "prototype", feature: function () { console.log( `Help in learning ${this.name}. The topic is ${this.content}` ); } } // Simple method to feature of gfg object gfg.feature(); console.log() // Try to bind gfg object property feature // to other common function so that it // used for later use but it does not // happen here let b = gfg.feature; b(); console.log() // Now try to bind object using bind // method // bind method first argument refer // object that's why parameter gfg object let c = gfg.feature.bind(gfg); c();</script> |
Note: Bind different objects to a common function so that each object can access that function and extra functionality to objects so bind function takes any number of arguments. Example 2:
Javascript
<script> const gfg = { name: "javascript", content: "prototype", } const gfg1 = { name: "c++", content: "inheritance", } const gfg2 = { name: "java", content: "applet", } // Function which is binding with different object function features(param) { console.log(`Help in learning ${this.name}. The topic is ${this.content} and these are help in ${param}`) } // Binding obj1 abd extra functionality let bindfunc = features.bind(gfg); bindfunc("placement"); // Binding obj2 let bindfunc1 = features.bind(gfg2); bindfunc1("placement");</script> |
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