javascript - Trying to get parent id and child id using document.getElementById. Error when trying to select both -


i'm using switch statement alter display of label based on dropdown selection.

i have div id 'titlebox' , nested 'a' id 'generatepid'. in switch statement, when select 'titlebox' using document.getelementbyid, can't find 'generatepid' , 

unable property 'style' of undefined or null reference

when remove line selecting 'titlebox' 'generatepid' found. 

<div id="titlebox" class="celltitle" style="width:40px"> <a href="javascript:generatep();" title="xxx." id="generatepid" name=                    "generatepid">generate</a></div>   function onselectcombo(){ var txt = var.getselectedtext(); switch(txt) {     case "a": document.getelementbyid('generatepid').style.display='none';       break;    case "b": document.getelementbyid('generatepid').style.display='none';       break;    case "c": document.getelementbyid('titlebox').innerhtml = "number"; document.getelementbyid('generatepid').style.display='inline'; break;    default: document.getelementbyid('generatepid').style.display='inline';    }    } 

document.getelementbyid('titlebox').innerhtml = "number"; //this line //changes dom <div foo='bar' ...> number </div>, //the below line never work expect.  //you should x.innerhtml += "number"; if fits needs document.getelementbyid('generatepid').style.display='inline';

Comments

Post a Comment

Popular posts from this blog

jOOQ update returning clause with Oracle -

according http://www.jooq.org/doc/3.8/manual/sql-building/sql-statements/update-statement/ jooq doesn't support returning clause in update statements databases except firebird , postgres. does know, still correct oracle jooq? according oracle's documentation, oracle db supports returning clase delete, insert, or update statements. incorrect manual you're right - manual wrong , should fixed: https://github.com/jooq/jooq/issues/5470 single row update returning jooq 3.8 added support single row update .. returning statements. internally, uses callablestatement , pl/sql block of form: begin update "my_table" set "my_table"."column" = 'xyz' "my_table"."id" = 1 returning "my_table"."id", "my_table"."column" ?, ?; ? := sql%rowcount; end; the relevant issue is: https://github.com/jooq/jooq/issues/5190 multi row update returning a...
Read more

java - Warning equals/hashCode on @Data annotation lombok with inheritance -

i have entity inherits other. on other hand, i'm using lombok project reduce boilerplate code, put @data annotation. annotation @data inheritance produces next warning: generating equals/hashcode implementation without call superclass, though class not extend java.lang.object. if intentional, add '@equalsandhashcode(callsuper=false)' type. is advisable add annotation @equalsandhashcode (callsuper = true) or @equalsandhashcode (callsuper = false) ? if not added, 1 callsuper=false or callsuper=true ? the default value false . 1 if don't specify , ignore warning. yes, recommended add @equalsandhashcode annotation on @data annotated classes extend else object. cannot tell if need true or false , depends on class hierarchy, , need examined on case-by-case basis. however, project or package, can configure in lombok.config call super methods if not direct subclass of object. lombok.equalsandhashcode.callsuper = call for configuration system ...
Read more

java - BasicPathUsageException: Cannot join to attribute of basic type -

i using java 8 jpa (hibernate 5.2.1). have clause works perfectly, until introduce clause make use foreign key table values too. i getting following error: basicpathusageexception: cannot join attribute of basic type i think problem related fact have join table, , not sure how create join using join table. employee - employee_category - category model (employee.java): @manytomany(cascade = cascadetype.all, fetch=fetchtype.eager) @jointable ( name="employee_category", joincolumns={ @joincolumn(name="emp_id", referencedcolumnname="id") }, inversejoincolumns={ @joincolumn(name="cat_id", referencedcolumnname="id") } ) private set<category> categories; model (category.java): @id private string id; jpa when introduce following code, fails error above (i think problem new piece of code): join<t, category> category = from.join("id"); predicates.add(criteriabuilder.like(category....
Read more