Why only one button works? and the other doesn't

Question

why does the script works only button when the window is loaded and without loaded?

and How make that the 2 buttons works?

code: https://code.sololearn.com/WMqwUANQw1eV/#js

Solved, in part.

Surged a related quesiton: https://www.sololearn.com/Discuss/403299/where-is-positioned-the-script-inside-html-tab-when-it-is-made-in-js-tab-codeplayground

code 2: https://code.sololearn.com/WIUa79ydJJMp/#html

Answer 1

write js file like that :

window.onload=function(){

btn_make.onclick=function(){
alert("made, only with window.onload\n and button f_call is not defined, why?");

};//btn_make

}; //window.onload

function f_call(){
alert("calling, only without window.onload\n and button_make is not defined, why?");
}//f_call

Answer 2

Place function f_call() outside the window.onload() otherwise it will be out of the scope once it's been loaded.

Answer 3

Idk if this is correct, but now it's not throwing errors:

HTML:

<button id="btn_make" onclick="btn_make()">make</button>
<button id="btn_call" onclick="f_call()">call</button>

JS:

function btn_make(){
alert("made, only with window.onload\n and button f_call is not defined, why?");
}

Answer 4

What is the position of the "script" inside the html tab, in sololearn codeplayground?

because "window.onload" is unnecessary when editing it locally, or placing the script before closing </body>

reformulated question: https://www.sololearn.com/Discuss/403299/where-is-positioned-the-script-inside-html-tab-when-it-is-made-in-js-tab-codeplayground

Answer 5

@Calvin now, the question is that, when I place it directly inside html, it works, example: https://code.sololearn.com/WIUa79ydJJMp/#html

so what is the script's position inside html, when it is in codeplaygorund's JS tab?

Answer 6

You cant use id name directly in Javascript
btn_make.onclick

Use getElementById function
And make sure it is called by window.onload.

Answer 7

@ysraelcon
Your question keeps on reappeared on recent list.
How you did that?

With all the suggestions, your issue remind unresolved?

Answer 8

because make hasnt got onclick