Want to learn Vue 3 fast? Vue.js 3 By Example is out now.
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Want to learn Vue 3 fast? Vue.js 3 By Example is out now.
Buy it now at https://www.packtpub.com/product/vue-js-3-by-example/9781838826345
Sometimes, we want to read JSON response with Axios and JavaScript.
In this article, we’ll look at how to read JSON response with Axios and JavaScript.
To read JSON response with Axios and JavaScript, we get the response body from the data
property.
For instance, we write
try {
const res = await axios.get("/end-point");
console.log(res.data);
} catch (error) {
// ...
}
to call axios.get
to make a get request.
It returns a promise that has the response data.
We get the response body from res.data
.
To read JSON response with Axios and JavaScript, we get the response body from the data
property.
Sometimes, we want to fix TypeError: Cannot read property ‘props’ of undefined with React.
In this article, we’ll look at how to fix TypeError: Cannot read property ‘props’ of undefined with React.
To fix TypeError: Cannot read property ‘props’ of undefined with React, we should make sure the value of this
is correct.
For instance, we write
class Parent extends React.Component {
state = {
//...
};
onDelete = () => {
//...
};
render() {
return <Child onDelete={this.onDelete} />;
}
}
to add the onDelete
function which has the value of this
set to the Parent
component instance since it’s an arrow function.
To fix TypeError: Cannot read property ‘props’ of undefined with React, we should make sure the value of this
is correct.
Sometimes, we want to load local JSON file to show data in a HTML page using JavaScript.
In this article, we’ll look at how to load local JSON file to show data in a HTML page using JavaScript.
To load local JSON file to show data in a HTML page using JavaScript, we define a global variable with the object.
For instance, we write
data = {
start: {
count: "5",
title: "start",
priorities: [
{
txt: "Work",
},
{
txt: "Time Sense",
},
{
txt: "Discipline",
}
],
},
};
in data.js to define the data
global variable set to an object.
Then we write
<html>
<head> </head>
<body>
<script src="data.js"></script>
</body>
</html>
to load it in our HTML code.
To load local JSON file to show data in a HTML page using JavaScript, we define a global variable with the object.
Sometimes, we want to replace backslashes with JavaScript.
In this article, we’ll look at how to replace backslashes with JavaScript.
To replace backslashes with JavaScript, we call the string replace
method.
For instance, we write
const replaced = str.replace(/\\/, "\\\\");
to call str.replace
to replace backslashes by replacing /\\/
with "\\\\"
double backslashes.
/\\/
matches the first instance of a backslash.
To replace backslashes with JavaScript, we call the string replace
method.
Sometimes, we want to get coordinates of an svg element with JavaScript.
In this article, we’ll look at how to get coordinates of an svg element with JavaScript.
To get coordinates of an svg element with JavaScript, we call the getBoundingClientRect
method.
For instance, we write
const { x, y } = element.getBoundingClientRect();
to get the x
and y
coordinates of the svg element
with the getBoundingClientRect
method.
To get coordinates of an svg element with JavaScript, we call the getBoundingClientRect
method.