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1. Dynamic creation of SELECT
function Createselect () { var myselect = document.createelement_x ("select"); = "Myselect"; Document.body.appendChild (Myselect);}2. Add Options option
function addoption () { // find objects by ID, var obj=document.getelementbyidx_x (' Myselect '); // Add an option Obj.add (new Option ("text", "value")); // This only works in IE. Obj.options.add (new// this compatible with IE and Firefox} 3. Remove all options option
function RemoveAll () { var obj=document.getelementbyidx_x (' Myselect '); Obj.options.length=0;} 4. Delete an option
function Removeone () { var obj=document.getelementbyidx_x (' Myselect '); // index, to remove the ordinal of the option, take the ordinal of the currently selected option var index=Obj.selectedindex; Obj.options.remove (index);} 5. Get the value of option options
var obj=document.getelementbyidx_x (' myselect 'var// sequence number, whichever is the currently selected option var val = obj.options[index].value;6. Get the text of options option
var obj=document.getelementbyidx_x (' myselect 'var// sequence number, whichever is the currently selected option var val = obj.options[index].text;7. Modify Options option
var obj=document.getelementbyidx_x (' myselect 'var// sequence number, whichever is the currently selected option var val = obj.options[index]= new Option ("Fresh Text", "New value");8. Delete Select
function Removeselect () { var myselect = document.getelementbyidx_x ("Myselect"); MySelect.parentNode.removeChild (Myselect);}The complete code for the entire instance is as follows:
<! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01//ZH-CN" "HTTP://WWW.W3.ORG/TR/HTML4/STRICT.DTD" >Improved version: Add, modify, and delete option elements in select
functionWatch_ini () {//Initial for(vari=0; i<arguments.length; i++){ varWord = document.createelement_x ("OPTION"); Word.text=Arguments[i]; Watch.keywords.add (word); //watch. is form name }}functionWatch_add (f) {//Increase varWord = document.createelement_x ("OPTION"); Word.text=F.word.value; F.keywords.add (word); However, the above add () method is only valid under IE, for the compatibility of FF and opera, the above code is improved, the following code is changed:functionWatch_ini () {//Initial for(vari=0; i<arguments.length; i++){ varooption=NewOption (Arguments[i],arguments[i]); Document.getelementbyidx_x ("Myselect") [i]=ooption; }}functionWatch_add (f) {//Increase varooption=NewOption (F.word.value,f.word.value); F.keywords[f.keywords.length]=ooption;}The complete code for the entire instance is as follows:
<!doctype HTML PUBLIC "-//W3C//DTD HTML 4.0 transitional//en" > functionWatch_ini () {//Initial for(vari=0; i<arguments.length; i++){ varooption=NewOption (Arguments[i],arguments[i]); Document.getelementbyidx_x ("Myselect") [i]=ooption;} } functionWatch_add (f) {//Increase varooption=NewOption (F.word.value,f.word.value); F.keywords[f.keywords.length]=ooption;} functionWatch_sel (f) {//EditF.word.value =F.keywords[f.keywords.selectedindex].text;} functionWatch_mod (f) {//ModifyF.keywords[f.keywords.selectedindex].text =F.word.value;} functionWatch_del (f) {//DeleteF.keywords.remove (f.keywords.selectedindex);} functionWatch_set (f) {//Save varSet = ""; for(vari=0; i<f.keywords.length; i++) {Set+ = F.keywords[i].text + ";"; } Confirm (set); } // -</script> Watch_ini ("I", "You", "You", "he", "she", "it", "er");//Initial keywords // -</script> <input type= "text" name= "word"/><br/> <input type= "button" value= "Add onclick=" Watch_ Add (this.form); "/> <input type=" button "value=" Modify "onclick=" Watch_mod (this.form); "/> <input type=" button "Value=" delete "onclick=" Watch_del (this.form), "/> <input type=" button "value=" Save "onclick=" Watch_set (this.form); " /> </form>Create an array method with a string:
<script language= "JavaScript" > </body> functionspli () {datastr= "2,2,3,5,6,6"; varStr=NewArray (); STR=datastr.split (","); for(I=0;i<str.length; i++) {document.write (Str[i]+ "<br/>"); }} spli (); </scripttoday debugging a section of JS, in IE, running well, debugging errors on Firefox, check data found Obj.add (NewOption ("text", "value"));//This only works in IE.Obj.options.add (NewOption ("text", "value");//this compatible with IE and FirefoxJS Operation Select and option
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