The key summary of using El Expression in JS: Use El expression in JS to be sure to add double quotes

The key summary of using El Expression in JS: Use El expression in JS to be sure to add double quotes

The EL expression is used in JS control, and the source code is as follows:

Java code

1. var selected = ${requestscope.xxxxform.recordnumperpage}

This always JS error, because requestScope.xxxxForm.recordNumPerPage is null at the first time. So under the boss's guidance, simply add two quotes, the code into Java code

1. var selected = "${requestscope.xxxxform.recordnumperpage}"

OK, the function is automatically implemented.
Attach the entire function code: Java code

2. function getselected (name) {
4. var selects = document.getelementsbyname (name);
6. var selected = "${requestscope.xxxxform.recordnumperpage}";
8. if (selected = = Undefined | | selected = = Null | | selected = ="") {
10. return false;
12. }
14. For (var j = 0; j < Selects.length; J + +) {
16. For (var i = 0; i = selects[j].length; i++) {
18. if (selects[j].options[i].value = = selected) {
20. SELECTS[J].OPTIONS[I].SELECTD = true;
22. }
24. }
26. }
28. }

Key Summary: Use EL expression in JS must use double quotation marks

The key summary of using El Expression in JS: Use El expression in JS to be sure to add double quotes