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This article shows you how to understand the window.$, content in javascript, which is concise and easy to understand, which will definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

Window.$ in javascript means to pass the window object into the anonymous function and execute the function at the same time, before the page is loaded.

This article operating environment: windows7 system, javascript1.8.5 version, Dell G3 computer.

What does window.$ mean in javascript?

It means that the window object is passed into the anonymous function, and the function is executed at the same time, before the page is loaded; parentheses have a return value, that is, the return value of a function or expression in parentheses, so the return value of function in parentheses is equal to the return value of parentheses.

Related introduction:

JavaScript Window-browser object model

The browser object model (Browser Object Model (BOM)) allows JavaScript to talk to the browser.

There is no official standard for the browser object Model (BOM).

Modern browsers have (almost) implemented the same methods and properties of JavaScript interaction, so it is often mentioned as methods and properties of BOM.

Window object

All browsers support window objects. It represents the window of the browser.

All global JavaScript objects, functions, and variables automatically become members of the window object.

Global variables are properties of the window object.

The global function is the method of the window object.

Even the (HTML DOM's) document object is a window object property:

Window.document.getElementById ("header")

Equivalent to:

Document.getElementById ("header"); the above is how to understand window.$, in javascript. Have you learned any knowledge or skills? If you want to learn more skills or enrich your knowledge reserve, you are welcome to follow the industry information channel.

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