Python Day59 JQuery2

Source: Internet
Author: User

What to learn today:

One, supplementary style operation

1. CSS (NAME|PRO|[,VAL|FN]) accesses the style attribute of the matching element $ ("P"). CSS ("color") gets the value of the color style property of the first paragraph

$ ("P"). css ({"Backgroud": "Bule", "COLCR": "Red"}) sets the font color of all paragraphs to red and the background to blue

$ ("P"). CSS ("Color", "red") to set all paragraph fonts to red

(Location dependent) * * *

2 position () Gets the offset of the matching element relative to the parent element. The returned object contains two integer properties: Top and left

3 offset ([coordinates]) gets the relative offset of the matching element at the current viewport. The returned object contains two integer properties: Top and left

4 ScrollTop ([Val]) Gets the offset of the match element relative to the top of the scrollbar this method is valid for both visible and hidden elements

5 ScrollLeft ([Val]) Gets the offset to the left of the matching element relative to the scrollbar. This method is valid for both visible and hidden elements

Second, the text operation

1 text ([VAL|FN]) Gets the contents of all matching elements$(‘p‘).text() 返回p元素的文本内容

                   $("p").text("Hello world!") 设置所有 p 元素的文本内容

2 HTML ([VAL|FN]) Gets the HTML content of the first matching element$(‘p‘).html() 返回p元素的内容

3 Val ([Val|fn|arr]) obtains the current value of the matching element $ ("input"). Val () Gets the value of the text box in $ ("input"). Val ( "hello world!" ) Sets the value of the text box

Third, attribute operation

1 prop (NAME|PROPERTIES|KEY,VALUE|FN) Gets the property value of the first element in a matching element set

    $("input[type=‘checkbox‘]").prop("checked") 选中复选框为true,没选中为false

    $("input[type=‘checkbox‘]").prop({disabled: true})  禁用页面上的所有复选框

    $("input[type=‘checkbox‘]").prop("disabled", false); $("input[type=‘checkbox‘]").prop("checked", true);禁用和选中所有页面上的复选框

2 attr (NAME|PROPERTIES|KEY,VALUE|FN) Sets or returns the attribute value of the selected element

        $("img").attr("src") 返回文档中所有图像的src属性值

$("img").attr({ src: "test.jpg", alt: "Test Image" })为所有图像设置src和alt属性

$("img").attr("src","test.jpg") 为所有图像设置src和alt属性

Iv. Event Binding

1 on (EVENTS,[SELECTOR],[DATA],FN) an event handler that is bound to one or more events in the selection element

    


$("p").on("click", function(){alert( $(this).text() );})

Python Day59 JQuery2

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