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Adam Fields
4,487 PointsI cant seem to get this code to work I followed along and It keeps saying null or undefined when I use the value method
html <!DOCTYPE html> <html> <head> <title>JavaScript and the DOM</title> <link rel="stylesheet" href="css/style.css"> </head> <body> <h1 id="myHeading">JavaScript and the DOM</h1> <p id="myParagraph">Making a web page interactive</p> <input type="text" id="myInputText"> <button id="myButton">change headline color</button> <script src="app.js"></script> </body> </html>
js
const myHeading=document.getElementById("myHeading");
const myButton=document.getElementById("myButton");
const myTextInput=document.getElementById("myTextInput");
myButton.addEventListener('click', () => {
myHeading.style.color=myTextInput.value
} );
1 Answer
matt mccherry
4,493 PointsSimple frustrating problem! Check your id tags in the html.
You will see that your input id is <input type="text" id="myInputText">. The JS is looking for an input element of myTextInput.
const myTextInput=document.getElementById("myTextInput");
//Solution (either change html or JS)
//JS changes shown here
const myHeading=document.getElementById("myHeading");
const myButton=document.getElementById("myButton");
const myInputText=document.getElementById("myInputText"); // changed to "myInputText"
myButton.addEventListener('click', () => {
myHeading.style.color= myInputText.value; // changed to "myInputText"
} );