Disable a built-in function in javascript (alert)
Simple: I want to disable/overwrite alert()
.
Can I do this?
More importantly, is it right to do this?
What ab开发者_如何学JAVAout strict mode?
Yes, you can disable or overwrite alert()
. No, it's not right to do it, except in some bizarre and limited situations.
Disable:
window.alert = function() { };
Override:
window.alert = function(text) { /* do something */ };
Yes you can, it's your choice. You could also store the original 'alert':
window.nativeAlert = window.alert;
window.alert = function(val){console.log(val+' (alert disabled)');};
now the old alert is still usable: nativeAlert('something');
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