DOM model and event handling---basic operations

1, Getelementbyidgetelementbyid, which is obtained by ID, gets an elementfunctionShowpassword () {varPWD = Documnet.getelementbyid (' Password '); //InnerText does not support FirefoxDocumnet.getelementbyid (' content '). innerHtml =Pwd.value;}2, Getelementsbynamegetelementsbyname represents the value obtained by the name of the property, gets the arrayfunctionnametest () {//based on the node's property name, name = user, to find the node, return the array    varUsers = document.getelementsbyname (' user ');  for(vari=0;i<users.length;i++){        varv =Users[i].value; if(v = = ' us ') {Users[i].value= ' Hello '; }    }}3, getElementsByTagName, which is obtained by tag name, gets an arrayfunctiontagtest () {//gets the node based on the tag name, also an array    vartags = document.getelementsbytagname (' input ');  for(var-= 0;i<tags.length;i++){        varv =Tags[i].value; }    //if only one element is still an array object    varts = document.getelementsbytagname (' div '); alert (ts.length);}

DOM model and event handling---basic operations