Is it possible to write function using innerHTML in javascript, like below :
eg:
frameDoc.body.innerHTML ='<script type="text/javascript">';
frameDoc.body.innerHTML+='function highlightSearch(){';
frameDoc.body.innerHTML+='alert("example");';
frameDoc.body.innerHTML+='return true;}';
frameDoc.body.innerHTML+='</script>';
Yes, it is possible to add a function to an HTML file trought innerHTML. In fact, most of the third parties API do so. They append their own script using this system or document.createElement('script').
If you want to execute the code you should change approach. The best way to do so is to create a dynamic script node and add it to the document. A worse approach but that still works is using document.write.
document.write('<script type="text/javascript">');
document.write('function highlightSearch(){');
document.write('alert("example");');
document.write('return true;}');
document.write('highlightSearch()');
document.write('<\/script>');
Note that I added document.write('highlightSearch()'); to execute the function.
