import webdriver from 'selenium-webdriver';
const driver = new webdriver.Builder()
.withCapabilities(webdriver.Capabilities.chrome())
.build();
driver.get('https://www.google.com');
let foo = function(rules) {
rules.forEach(rule => {
rule();
});
}
let bar = function() { return 'bar' };
let baz = function() { return 'baz' };
driver.executeScript(foo, [bar, baz]).then(function(result) {
console.log(result);
});
driver.quit();
它错误了
WebDriverError: unknown error: rule is not a function
let foo = function(rules) {
return rules;
// rules.forEach(rule => {
// rule();
// });
}
let bar = function() { return 'bar' };
let baz = function() { return 'baz' };
driver.executeScript(foo, [bar, baz]).then(function(result) {
console.log(result); // refer the log pasted below
});
看起来该函数正在被序列化 string
[ 'function bar() {\n return \'bar\';\n}',
'function baz() {\n return \'baz\';\n}' ]
关于如何通过的任何指示array of functions as arguments都将有所帮助。
我发现了一种不同的解决方法，没有eval 明确使用，但以类似的方式。
注入function.toString()作为的内容<script>
function foo(rules) {
var result = [];
rules.forEach(rule => {
result.push(rule());
});
return result;
}
function bar() { return 'bar' };
function baz() { return 'baz' };
function inject(content) {
var script = document.createElement('script');
script.innerHTML = content;
document.head.appendChild(script);
}
let script = `${bar.toString()} ${baz.toString()} ${foo.toString()}`;
driver.executeScript(inject, script);
然后执行所需的功能
driver.executeScript('return foo([bar, baz])').then(function(result) {
// use the result
});
完整的例子
// example.js
import webdriver from 'selenium-webdriver';
const driver = new webdriver.Builder()
.withCapabilities(webdriver.Capabilities.chrome())
.build();
driver.get('https://www.google.com');
function foo(rules) {
var result = [];
rules.forEach(rule => {
result.push(rule());
});
return result;
}
function bar() { return 'bar' };
function baz() { return 'baz' };
function inject(content) {
var script = document.createElement('script');
script.innerHTML = content;
document.head.appendChild(script);
}
let script = `${bar.toString()} ${baz.toString()} ${foo.toString()}`;
driver.executeScript(inject, script);
driver.executeScript('return foo([bar, baz])').then(function(result) {
console.log(result);
});
driver.quit();
> babel-node example.js
[ 'bar', 'baz' ]
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我来说两句