var str ="Please locate where 'locate' occurs!";var ind1 = str.indexOf("locate");// return location of first value which foundedvar ind2 = str.lastIndexOf("locate");// return location of last value which foundedvar ind3 = str.indexOf("locate",15);// start search from location 15 and then take first value which foundedvar ind4 = str.search("locate");//The search() method cannot take a second start position argument. //The indexOf() method cannot take powerful search values (regular expressions).document.write("<br>"+"Length of string:", len);document.write("<br>"+"indexOf:", ind1);document.write("<br>"+"index of last:", ind2);document.write("<br>"+"indexOf with start point:", ind3);document.write("<br>"+"search:", ind4);