jquery object converted to character

In development using jQuery, we often need to convert a jQuery object (or selector) into a string to facilitate use in different operations and methods. There are two main conversion methods: one is to use the jQuery object method, and the other is to use the JavaScript native method.

Method 1: Use the jQuery object conversion method

To convert a jQuery object into a string, you can use the jQuery object's html(), text() or outerHTML() methods. Here is the html() method as an example:

var $obj = $('#test');
var str = $obj.html();
console.log(str); // 输出test元素内的HTML代码

If you want to convert the HTML code of the entire page into a string, you can use $("html") as the selector:

var str = $("html").html();
console.log(str); // 输出整个页面的HTML代码

Same , use the text() method to convert the text content within the jQuery object into a string:

var $obj = $('#test');
var str = $obj.text();
console.log(str); // 输出test元素内的文本内容

outerHTML() method can convert the jQuery object itself and its internal HTML code together into a string:

var $obj = $('#test');
var str = $obj[0].outerHTML; // 注意要取第一个元素
console.log(str); // 输出test元素及内部的HTML代码

Method 2: Use JavaScript native method

In JavaScript, we can use the toString() method to convert an object into a string. Similarly, you can also convert jQuery objects into strings:

var $obj = $('#test');
var str = $obj.toString();
console.log(str); // 输出[object Object]

The result here is just to convert the jQuery object itself into a string, and the internal HTML code or text content cannot be obtained. If you want to get the internal content, you need to use other methods of the jQuery object, as shown above.

Note: The toString() method only applies to ordinary JavaScript objects. Unexpected results may occur for jQuery objects and other encapsulated objects.

Summary:

In development, converting jQuery objects into strings is a common operation. Mastering the above two methods can be more flexibly applied to different scenarios. Choosing the appropriate method according to the situation can greatly improve development efficiency.

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