How can I get the json data from apiUrl? Need some help writing the function
changeUrl: function(evt){
this.setState({
value: evt.target.value,
apiUrl: "https://test.holmusk.com/food/search?q=" + evt.target.value
});
},
getJson: function() {
},
Your code is a bit confusing because it's hard to tell why you're setting apiURL in setState, when I assume you need to call that URL to get the Json data. The commenter makes a good point about setting up a data-retrieval architecture using a library like Redux. However, if you want to just do a plain-vanilla Javascript call, you could do something like below. It's hard to tell if you need the Json results in your component's state, but I'm guessing you do, so I rearranged the code with that assumption in mind.
changeUrl: function(evt){
getJson(evt.target.value);
},
getJson: function(newVal) {
var request = new XMLHttpRequest();
request.open('GET', "https://test.holmusk.com/food/search?q=" + newVal, true);
request.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
//this callback gets called when the server responds to the ajax call
request.onreadystatechange = function(){
if (request.readyState === 4 && request.status === 200){
var returnedJson = JSON.parse(request.responseText);
//this is where you would want to run setState if you need the returned Json for it.
setState({newJson: returnedJson});
}
else if (request.readyState === 4 && request.status !== 200){
alert('error');
}
};
request.send();
}
