javascript - Add class or style if text in div appears -


i have order form i'm making. right when put coupon code want apply div of old price style or class (line-through) , though had right...here i'm doing.....any suggestion why might not working? warning: new javascript....i've been working css html javascript story. thanks!

if ($('#grand_amount_value').length > 1){     $("#total_amount_old_val").attr("style", "text-decoration:line-through"); }

here example threw show working:

https://jsfiddle.net/pj6xwhcy/3/

function strikeoldamt() {     var gav = $("#grand_amount_value");     if (gav.length > 0 && gav.text() != "" ){         // there gav element , not empty, strike out old amount!         $("#total_amount_old_val").css("text-decoration", "line-through");     } }

note: using "style" attribute wipe out other custom styling may have added. using css() function not interfere if style attribute set.


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