How jquery selects the first few elements
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In jquery, you can select the first few elements using the ": lt ()" selector, which is used to select elements whose index value is less than a specified number. This selector is often used with other selectors to select elements before a specific sequence number in a specified combination, with the syntax of "$(": lt (index) ")".
The operating environment of this tutorial: windows10 system, jquery3.2.1 version, Dell G3 computer.
How does jquery select the first few elements?
The lt () selector selects elements whose index value is less than the specified number.
The index value starts at 0.
The most common use: use with other selectors to select elements that precede a specific sequence number in a specified combination (such as the example above).
Instead, you can use: gt selector to select elements whose index value is greater than the specified number.
Grammar
$(": lt (index)")
Index is required. Specify the elements to be selected. Elements whose index value is less than the specified number are selected.
Examples are as follows:
$(document) .ready (function () {$("tr:lt (4)") .css ("background-color", "yellow");}) Welcome to my homepage serial number website 1 Google google.com 2 PHP php.cn 3 Taobao taobao.com 4 Baidu baidu.com 5 Sina sina.com.cn 6 Facebook facebook.com 7 twitter twitter.com 8 youtube youtube.com
Output result:
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