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[en]trashscript_lib

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devel01 edited this page Dec 7, 2024 · 5 revisions

Global

sleep

sleep(milliseconds);

The time interval for which execution is to be suspended, in milliseconds.

timestamp

timestamp()

The timestamp() function returns a datetime value based on a date or datetime value, identical to new Date().getTime()

alert

atob

btoa

decodeURI

decodeURIComponent

encodeURI

encodeURIComponent

URL

console

JSON

DOM

DOM manipulation can only read content from the webpage and does not provide any functionality for making modifications.

css selectors

//query elements
elements = $(css_selector);

//query all div elements
elements = $("div")

//query all div elememts under body
elements = $("div","body")

Members:

length

elements = $("div")
elements.length; //the length of div elements

eq

elements = $("div")
elements.eq(0) //get an element from the elements by index

each

/*
 * the each method is an iterative method.
 * It calls a provided callbackFn function once for each element in an array in ascending-index order.  
*/
elements = $("div");
result   = elements.each(function(i,element){
    //the result is undefined
});

result   = elements.each(function(i,element){
    //break the loop, the result is true
    return true;
});

css

<span id="content" style="color:red"></span>
//Get the corresponding computed style from an element.
color = $("#content").css("color")

attr

<img src="img.png"/>
//Get the corresponding attribute from an element.
src = $("img").attr("src");

prop

get property from a DOM object

$("div").prop("dom_property")
$("div").prop(function(name,value){
    if(name === "key"){
        return value;
    }
})

data

get data from a DOM dataset object

$("div").data("dataset_property")
$("div").data(function(name,value){
    if(name === "key"){
        return value;
    }
})

click

Click all elements

$("button").click();

text

<span id="aa">text</span>
//Get the rendered text content of a element and its descendant.
src = $("#aa").text();

html

<span id="aa"><span>text</span></span>
//The html method returns a serialization of the nested child DOM elements within the element.
src = $("#aa").html();

parent

<body>
    <span></span>
</body>
//Get the parent element of the span.
element = $("span").parent()

children

<body>
    <span>1</span>
    <span>2</span>
    <span>3</span>
</body>
elements = $("body").children();
elements.each(function(i,element){
     console.log(element.text());
});

siblings

<body>
    <span id="a">1</span>
    <span id="b">2</span>
    <span id="c">3</span>
</body>
siblings = $("#a").siblings();
siblings.each(function(i,element){
     console.log(element.text());
});

next

<body>
    <span id="a">1</span>
    <span id="b">2</span>
    <span id="c">3</span>
</body>
$("#a").next(); //b

prev

<body>
    <span id="a">1</span>
    <span id="b">2</span>
    <span id="c">3</span>
</body>
$("#b").prev(); //a

val

Get the value of and element.

<input value="123" />
$("input").val(); //The value is "123"

HTTP

Execute HTTP requests.

http = HTTP(method,url,username = "",password = "")
http.options(opts = {})
http.request(post_data = null)

Options:

{
    //key: value, HTTP request headers
    headers: {
        referer:"http://xxxx"
    } 
}

HTTP.get

http = HTTP.get(url,options = {})

HTTP.post

http = HTTP.get(url,post_data,options = {})

HTTP_Intermedia

/*
 * The default XMLHttpRequest does not support cross-origin requests. 
 * However, you can override the HTTP_Intermedia function to forward the request to another program, such as background.js. 
 * Finally, you can execute the resolve_callback to submit the results. 
*/
TrashScript.perperties.HTTP_Intermedia = function(option,resolve_callback)
{
    //option.method;  request method: GET, POST....
    //option.url;     request url
    //option.data;    post data (string or object)
    //option.timeout, {timeout:5000}
    //option.headers, {referer:"xxxx"}
    
    resolve_callback({status:200,status_text:"text",headers:{},body:"response content"})
}

Members:

{
    method: String,
    url: String,
    request_headers: Object,
    options: function(options_object),
    request: function(post_data),
}

Result:

{
    status: Number,         //status code
    status_text: String,    //status text
    body: String,           //response body
    text: String,           //response text
    XML: String,            //formatted response xml
    JSON: String,           //formatted response JSON, or null

    header: function(name)  //response headers, if name is undefined, it returns all headers
}
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