javascript - html button not calling its onclick js function

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javascript - html button not calling its onclick js function

posted Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

javascript - html button not calling its onclick js function

Why does this simple alert not work?

HTML:

<button id="mybutton" type="button" onclick="add()">Add</button>

JS:

function add(){
alert("hello???");
}

https://jsfiddle.net/k86mg0aj/

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1 Reply

深蓝 · Answer 1 · 2022-01-31T07:26:39+0000

The problem is specific to JSFiddle. You need to change the LOAD TYPE to No wrap - bottom of <body>.

When using onLoad, the function won't become global one, so you can't invoke it directy from HTML. If it is global - like when using no-wrap - it works.

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javascript - html button not calling its onclick js function

javascript - html button not calling its onclick js function

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