如何寻找页面javascript函数的代码


chgTab(areaNumber,tabNumber){if(areaNumber=="area1"){$id(g_area1Previous).className="product_tab_unselect";$id(g_area1Previous+"_content").className="product_unselect";$id(tabNumber).className="product_tab_select";$id(tabNumber+"_content").className="product_select";g_area1Previous=tabNumber;}else{$id(g_area2Previous).className="indi_tab_unselect";$id(g_area2Previous+"_content").className="qq_unselect";$id(tabNumber).className="indi_tab_select";$id(tabNumber+"_content").className="qq_select";g_area2Previous=tabNumber;}}这是这个函数的代码