Overview
When you develop an automation process, you may encounter complex web elements that require direct manipulation with JavaScript. This topic explains how to execute a JS code snippet to handle these scenarios.
Example
This topic uses the example of selecting a specific year, month, and day from a calendar widget.
Note
Alternatively, you can use the dynamic control capturing method to achieve the same result.
Code-based development
Use the execute_js function to select the specified year, month, and day.
from rpa.core import *
from rpa.utils import *
import rpa4 as rpa # Use the V4 engine
def start():
# Start writing your application here
# Set a specific date
date = '2022-9-22'
# JS script
js_code = """
function data(params){
var years = params.split('-')[0];
var month = params.split('-')[1];
var day = params.split('-')[2];
var date_doc = document.getElementsByClassName('cosc-card-content-border cosc-card-shadow cosc-card-light-bg-border')[0];
setTimeout(function(){
console.log('Start selecting the year');
var year = date_doc.getElementsByClassName('cos-cascader')[0].getElementsByTagName('div')[0].getElementsByTagName('span')[0].innerText.split('年')[0];
if(year != years){
date_doc.getElementsByClassName('cos-cascader')[0].getElementsByTagName('i')[0].click();
setTimeout(function() {
years_list=date_doc.getElementsByClassName('cos-cascader')[0].getElementsByClassName('cos-cascader-options')[0].getElementsByClassName('cos-cascader-option-text');
for(var i = 0;i < years_list.length;i++){
year = years_list[i].innerText.split('年')[0];
if(year == years){
years_list[i].click();
console.log('Year selected');
}
}
}, 1000);
}
setTimeout(function() {
console.log('Start selecting the month');
month_part = date_doc.getElementsByClassName('header-block-2_38JLk cu-ml-sm-lg')[0].getElementsByClassName('cos-cascader-entry')[0].getElementsByTagName('span')[0].innerText.split('月')[0];
if(month_part != month){
date_doc.getElementsByClassName('header-block-2_38JLk cu-ml-sm-lg')[0].getElementsByClassName('cos-cascader-entry')[0].getElementsByTagName('i')[0].click();
setTimeout(function() {
month_list = date_doc.getElementsByClassName('header-block-2_38JLk cu-ml-sm-lg')[0].getElementsByClassName('cos-popover cos-cascader-panel')[0].getElementsByClassName('cos-cascader-options')[0].getElementsByClassName('cos-cascader-option-text');
for(var i = 0;i < month_list.length;i++){
month_part = month_list[i].innerText.split('月')[0];
if(month_part == month){
month_list[i].click();
console.log('Month selected');
}
}
}, 500);
}
}, 2000);
setTimeout(function() {
console.log('Start selecting the day');
var lists = document.getElementsByClassName('_page-list_shkz3_132 page-list_6fhk3')[0].getElementsByClassName('_light_1so0w_1')[0].getElementsByClassName('content_1Jdsr')[0].getElementsByClassName('cos-row')[0].getElementsByClassName('cos-col');
for(var i = 0;i < lists.length;i++){
class_name = lists[i].className;
var reg = RegExp('opacity')
if(reg.test(class_name) != true){
date = lists[i].getElementsByClassName('number_7sHfk')[0].innerText;
if(date == day){
lists[i].getElementsByClassName('number_7sHfk')[0].click();
console.log('Day selected');
}
}
}
}, 3000);
},1000)
return('Date selection is complete')
};
// Call the JS function
result = data('%s');
return result;
"""%date
page = rpa.app.chrome.create('https://www.baidu.com/s?wd=%E6%97%A5%E5%8E%86')
sleep(3)
# Execute the JS script by using the execute_js function
result = page.execute_js(js_code)
print(result)Visual development
Use the execute JS component to select the specified year, month, and day.
The visual project is shown below:
The execute JS component uses the following code:
function data(params){ var years = params.split('-')[0]; var month = params.split('-')[1]; var day = params.split('-')[2]; var date_doc = document.getElementsByClassName('cosc-card-content-border cosc-card-shadow cosc-card-light-bg-border')[0]; setTimeout(function(){ console.log('Start selecting the year'); var year = date_doc.getElementsByClassName('cos-cascader')[0].getElementsByTagName('div')[0].getElementsByTagName('span')[0].innerText.split('年')[0]; if(year != years){ date_doc.getElementsByClassName('cos-cascader')[0].getElementsByTagName('i')[0].click(); setTimeout(function() { years_list=date_doc.getElementsByClassName('cos-cascader')[0].getElementsByClassName('cos-cascader-options')[0].getElementsByClassName('cos-cascader-option-text'); for(var i = 0;i < years_list.length;i++){ year = years_list[i].innerText.split('年')[0]; if(year == years){ years_list[i].click(); console.log('Year selected'); } } }, 1000); } setTimeout(function() { console.log('Start selecting the month'); month_part = date_doc.getElementsByClassName('header-block-2_38JLk cu-ml-sm-lg')[0].getElementsByClassName('cos-cascader-entry')[0].getElementsByTagName('span')[0].innerText.split('月')[0]; if(month_part != month){ date_doc.getElementsByClassName('header-block-2_38JLk cu-ml-sm-lg')[0].getElementsByClassName('cos-cascader-entry')[0].getElementsByTagName('i')[0].click(); setTimeout(function() { month_list = date_doc.getElementsByClassName('header-block-2_38JLk cu-ml-sm-lg')[0].getElementsByClassName('cos-popover cos-cascader-panel')[0].getElementsByClassName('cos-cascader-options')[0].getElementsByClassName('cos-cascader-option-text'); for(var i = 0;i < month_list.length;i++){ month_part = month_list[i].innerText.split('月')[0]; if(month_part == month){ month_list[i].click(); console.log('Month selected'); } } }, 500); } }, 2000); setTimeout(function() { console.log('Start selecting the day'); var lists = document.getElementsByClassName('_page-list_shkz3_132 page-list_6fhk3')[0].getElementsByClassName('_light_1so0w_1')[0].getElementsByClassName('content_1Jdsr')[0].getElementsByClassName('cos-row')[0].getElementsByClassName('cos-col'); for(var i = 0;i < lists.length;i++){ class_name = lists[i].className; var reg = RegExp('opacity') if(reg.test(class_name) != true){ date = lists[i].getElementsByClassName('number_7sHfk')[0].innerText; if(date == day){ lists[i].getElementsByClassName('number_7sHfk')[0].click(); console.log('Day selected'); } } } }, 3000); },1000) return('Date selection is complete') }; result = data("''' + date_time + '''"); return result;
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