Apply span to selected text in javascript -

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i apply span class selected text on browser window in javascript (like highlight feature).

i've tried with

function replaceselectedtextwithhtmlstring(newstring) {     var range = window.getselection().getrangeat(0);     range.deletecontents();     range.innerhtml = newstring; }

but not work. if try insert newstring= "< span = "myspan" > text < / span >" can't , 'text' not appear. seems not html code. how can solve it?

how easy depends on need achieve. if need basic highlighting using background colour, best bet document.execcommand(). see following code this: change css of selected text using javascript

if need apply more styling document.execcommand() can provide (there various other formatting commands things bold , italic, markup produces varies between browsers , isn't css based), it's trickier: in general, need surround every text node within selection in span desired class. suggest using rangy , css class applier module in cross-browser way. disclaimer: plug own library.


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