How do we mutate a string in Javascript -

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i have string t2 , want mutate string based on below if condition . tried .replace doesnt work. 

t2 = "<li class='coded_true'>"+tp_info.elements["info"].cdatas.join.strip+"</li>"  if (tp_info.attributes["itcoded"]== "true")                 t2= t2.replace(t2,"<li class='coded_true itcoded_true'>"+tp_info.elements["info"].cdatas.join.strip+"</li>");                 end

thanks!

there's no need use .replace() substitute entire string:

t2 = t2.replace(t2, ...);

at point, can assign replacement directly:

t2 = "<li class='coded_true itcoded_true'>"+tp_info.elements["info"].cdatas.join.strip+"</li>";

though, since difference between them in class names, might consider trying determine ahead of time , build markup string afterwards.

var t2_class = ['coded_true'];  if (tp_info.attributes["itcoded"] == "true") {     t2_class.push('itcoded_true'); }  var t2 = "<li class='" + t2_class.join(' ') + "'>"+tp_info.elements["info"].cdatas.join.strip+"</li>"

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