How to eliminate javascript warning box

Method to eliminate the javascript warning box: first open the code to rewrite the alert method; then the rewritten syntax is [old method = function (parameter) {content of new method}], and the return value is false That’s it.

Method to eliminate the javascript warning box:

Rewrite the "alert" method, the rewritten syntax is: : "Old method = function (parameter) {content of new method}", the return value should be "false", which means no operation is performed.

Specific code:

<script LANGUAGE="JavaScript">
<!--
window.alert = function(str){
return ;
}
alert("不能弹出警示框");//-->
</script>

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