+ 3

Why it can't work

i want to change 'some text' to 'another text' i use first child, but why it say firstChild of null, here my script <html> <body> <div id ="demo"> <p>some text</p> <p>some other text</p> </div> <script type="text/javascript"> var test = document.getElementById("demo"); var a = test.firstChild; a.innerHTML = "Another Text"; </script> </body> </html>

javascript dom

15th May 2017, 10:04 AM

M. Iqbal Maulana

4 Answers

+ 6

try to remove .firstChild out.then it will worked well you might ask with "why?" bc document.getElementById will return/get HTMLElement(one element only) while getElementsByTagName, getElementsByClassName or another selector Will return/get Multiple elements so.... can have "firstChild"

15th May 2017, 10:13 AM

Yanothai Chaitawat