我将以下代码作为脚本的一部分,该脚本打开了带区检出功能。麻烦的是,没有多少人会使用它,而stripe正在减慢我的网站的速度,它在每个页面上的加载量都超过280kb,并发出40个http请求。我只想当某人单击“购买”时才加载stripe.js。这是现有的代码:
$button.addEventListener('click', () => {
setTimeout(() => {
$button.innerHTML = 'Waiting for response...';
}, 500);
handler.open({
amount,
name: 'Test Shop',
description: 'A Fantastic New Widget'
});
});
这是我的最佳尝试-这次显示完整的完整文件:
import uuid from 'uuid/v4';
const amount = 1000;
const $messageBox = document.getElementById('messageBox');
const $button = document.querySelector('button');
function resetButtonText() {
$button.innerHTML = 'Click to Buy! <strong>$10</strong>';
}
const handler = StripeCheckout.configure({
key: STRIPE_PUBLISHABLE_KEY,
image: 'https://stripe.com/img/documentation/checkout/marketplace.png',
locale: 'auto',
closed: function () {
resetButtonText();
},
token: function(token) {
fetch(`${LAMBDA_ENDPOINT}purchase`, {
method: 'POST',
body: JSON.stringify({
token,
amount,
idempotency_key: uuid()
}),
headers: new Headers({
'Content-Type': 'application/json'
})
})
.then(res => res.json())
.catch(error => console.error(error))
.then(response => {
resetButtonText();
let message = typeof response === 'object' && response.status === 'succeeded'
? 'Charge was successful!'
: 'Charge failed.'
$messageBox.querySelector('h2').innerHTML = message;
console.log(response);
});
}
});
$button.addEventListener('click', () => {
var script = document.createElement("script");
script.type = "text/javascript";
script.src = "https://checkout.stripe.com/checkout.js";
document.getElementsByTagName("head")[0].appendChild(script);
setTimeout(() => {
$button.innerHTML = 'Waiting for response...';
}, 500);
handler.open({
amount,
name: 'Test Shop',
description: 'A Fantastic New Widget'
});
});
这会导致错误:
Uncaught ReferenceError: StripeCheckout is not defined
at Module.<anonymous>
如何避免这种情况?请不要使用jQuery。
答案 0 :(得分:1)
将script.onload
设置为回调函数,然后在此处进行设置,而不是等待任意超时。
$button.addEventListener('click', () => {
$button.innerHTML = 'Waiting for response...';
var script = document.createElement("script");
script.type = "text/javascript";
script.src = "https://checkout.stripe.com/checkout.js";
script.onload = function () {
// Now that we have the script loaded, we can create the stripe handler...
const handler = StripeCheckout.configure({
key: STRIPE_PUBLISHABLE_KEY,
image: 'https://stripe.com/img/documentation/checkout/marketplace.png',
locale: 'auto',
closed: function () {
resetButtonText();
},
token: function(token) {
fetch(`${LAMBDA_ENDPOINT}purchase`, {
method: 'POST',
body: JSON.stringify({
token,
amount,
idempotency_key: uuid()
}),
headers: new Headers({
'Content-Type': 'application/json'
})
})
.then(res => res.json())
.catch(error => console.error(error))
.then(response => {
resetButtonText();
let message = typeof response === 'object' && response.status === 'succeeded'
? 'Charge was successful!'
: 'Charge failed.'
$messageBox.querySelector('h2').innerHTML = message;
console.log(response);
});
}
});
// and use the handler to do whatever we want.
handler.open({
amount,
name: 'Test Shop',
description: 'A Fantastic New Widget'
});
};
document.getElementsByTagName("head")[0].appendChild(script);
});