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Learn the meaning of push as a verb and a noun, with different senses and usage examples. Find out how to use push in phrases, idioms and phrasal verbs.
Push Operations is a full workforce management software specializing in time attendance, scheduling and payroll.
The push() method adds new items to the end of an array. The push() method changes the length of the array. The push() method returns the new length.
Learn the various meanings and uses of the word push as a verb, noun, and abbreviation. See synonyms, examples, phrases, and word history of push.
- Overview
- Syntax
- Description
- Examples
- Browser compatibility
- See also
The push() method of Array instances adds the specified elements to the end of an array and returns the new length of the array.
Parameters
element1, …, elementN The element(s) to add to the end of the array.
Return value
The new length property of the object upon which the method was called.
The push() method appends values to an array.
Array.prototype.unshift() has similar behavior to push(), but applied to the start of an array.
The push() method is a mutating method. It changes the length and the content of this. In case you want the value of this to be the same, but return a new array with elements appended to the end, you can use arr.concat([element0, element1, /* ... ,*/ elementN]) instead. Notice that the elements are wrapped in an extra array — otherwise, if the element is an array itself, it would be spread instead of pushed as a single element due to the behavior of concat().
The push() method is generic. It only expects the this value to have a length property and integer-keyed properties. Although strings are also array-like, this method is not suitable to be applied on them, as strings are immutable.
Adding elements to an array
The following code creates the sports array containing two elements, then appends two elements to it. The total variable contains the new length of the array.
Merging two arrays
This example uses spread syntax to push all elements from a second array into the first one. Merging two arrays can also be done with the concat() method.
Calling push() on non-array objects
The push() method reads the length property of this. It then sets each index of this starting at length with the arguments passed to push(). Finally, it sets the length to the previous length plus the number of pushed elements.
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•Polyfill of Array.prototype.push in core-js with fixes of this method
•Indexed collections guide
•Array
•Array.prototype.pop()
•Array.prototype.shift()
•Array.prototype.unshift()
Learn the meaning, pronunciation, usage and idioms of the verb push in English. See how to use push with different objects, prepositions, adverbs and phrasal verbs in various contexts and situations.
Learn the meaning of push as a verb and a noun, with different senses and usage examples. Find out how to use push in phrasal verbs, idioms and translations.
