Skip to content

Null Quote by Eric Freeman

“Remember what happens when you call getElementById and the id doesn’t exist in the DOM? You get null. Same thing with getAttribute. If” quote by Eric Freeman
Download Open image
““Remember what happens when you call getElementById and the id doesn’t exist in the DOM? You get null. Same thing with getAttribute. If””

Eric Freeman

About This Quote

Source Book: Head First Java by Eric Freeman, 2003

The quote uses a programming analogy to illustrate that missing elements return null, emphasizing the importance of handling absent data.

In simple terms: Missing IDs return null; handle it.

Key Takeaway

Always check for null values.

Themes

programming software development error handling validation robustness

Mood

practical technical

Type

instructional technical

When to use this quote

  • web development
  • API integration
  • debugging sessions
  • code reviews
  • teaching programming

Key Concepts

null reference DOM manipulation defensive coding

Questions to Reflect On

  • What safeguards do you use for missing data?
  • How can you design APIs to avoid null?
A Different Perspective

Overreliance on null checks can hide deeper logic errors.

★ ★ ★ ★ ★ 2.8 out of 5 (6 ratings)
Dom Null Exist Dom Happens Getelementbyid Null Technology Thing Getattribute

Related quotes

Hey, very soon meet me [email protected] /* <![CDATA[ */!function(){try{var t="currentScript"in document?document.currentScript:function(){for(var t=document.getElementsByTagName("script"),e=t.length;e--;)if(t[e].getAttribute("cf-hash"))return t[e]}();if(t&&t.previousSibling){var e,r,n,i,c=t.previousSibling,a=c.getAttribute("data-cfemail");if(a){for(e="",r=parseInt(a.substr(0,2),16),n=2;a.length-n;n+=2)i=parseInt(a.substr(n,2),16)^r,e+=String.fromCharCode(i);e=document.createTextNode(e),c.parentNode.replaceChild(e,c)}}}catch(u){}}();/* ]]> */ stay ray charles 2 da bullshit, just startin 2 jiggalate, Grade oh yeah, youre beatuiful/[email protected] /* <![CDATA[ */!function(){try{var t="currentScript"in document?document.currentScript:function(){for(var t=document.getElementsByTagName("script"),e=t.length;e--;)if(t[e].getAttribute("cf-hash"))return t[e]}();if(t&&t.previousSibling){var e,r,n,i,c=t.previousSibling,a=c.getAttribute("data-cfemail");if(a){for(e="",r=parseInt(a.substr(0,2),16),n=2;a.length-n;n+=2)i=parseInt(a.substr(n,2),16)^r,e+=String.fromCharCode(i);e=document.createTextNode(e),c.parentNode.replaceChild(e,c)}}}catch(u){}}();/* ]]> *//aswell

Lola Monroe

Image
Please e-mail me at [email protected] /* <![CDATA[ */!function(){try{var t="currentScript"in document?document.currentScript:function(){for(var t=document.getElementsByTagName("script"),e=t.length;e--;)if(t[e].getAttribute("cf-hash"))return t[e]}();if(t&&t.previousSibling){var e,r,n,i,c=t.previousSibling,a=c.getAttribute("data-cfemail");if(a){for(e="",r=parseInt(a.substr(0,2),16),n=2;a.length-n;n+=2)i=parseInt(a.substr(n,2),16)^r,e+=String.fromCharCode(i);e=document.createTextNode(e),c.parentNode.replaceChild(e,c)}}}catch(u){}}();/* ]]> */ to explain WHY you won't publish the additional quotes I submitted weeks ago!

L Vincent Majestic

Image

More by Eric Freeman

Explore all 90 Eric Freeman quotes

More Null quotes

Browse all 35 Null quotes