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

Source: Internet
Author: User

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
  1. function getselected (name) {
  2. var selects = document.getelementsbyname (name);
  3. var selected = "${requestscope.xxxxform.recordnumperpage}";
  4. if (selected = = Undefined | | selected = = Null | | selected = ="") {
  5. return false;
  6. }
  7. For (var j = 0; j < Selects.length; J + +) {
  8. For (var i = 0; i = selects[j].length; i++) {
  9. if (selects[j].options[i].value = = selected) {
  10. SELECTS[J].OPTIONS[I].SELECTD = true;
  11. }
  12. }
  13. }
  14. }

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

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