JS Add the onclick function

document.getElementById (' Add '). SetAttribute ("onclick", Addnum ());

The equivalent of calling the Addnum function continuously

should be changed into
document.getElementById (' Add '). SetAttribute ("onclick", "Addnum ()")




jquery or JS

1) When the method has no parameters, the assignment can be directly with the OnClick = method name

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window.onload = function() {$(‘btnTest‘).onclick = test; }functiontest() {alert(val);}

2) When the method has parameters, with the OnClick = method Name (parameter) is wrong, you need to precede the method name with function ()

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window.onload = function() {$(‘btnTest‘).onclick= function() { test(1) }; }functiontest(val) {alert(val);}

JS Add the onclick function