javascript fails to identify space character

Question

i am getting a stack trace from a REST service which looks like:

 oracle.mds.core.MetadataNotFoundException: MDS-00013: no metadata found for metadata object "/WEB-INF/root_menu_tm.xml" [[MDS-00201: PDocument not found in MetadataStore : [store-type=DefaultMetadataStore app-name=ORA_CRM_UIAPP lookup-order=ServletContext,Classpath]     at oracle.mds.core.MetadataObject.getBaseMO(MetadataObject.java:1600)   at oracle.mds.core.MDSSession.getMetadataObject(MDSSession.java:1663)   at oracle.apps.fnd.applcore.patterns.uishell.model.ApplicationsMenuModel.getMetadatObject(ApplicationsMenuModel.java:891)   at oracle.apps.fnd.applcore.patterns.uishell.model.ApplicationsMenuModel._createModel(ApplicationsMenuModel.java:492)   at oracle.apps.fnd.applcore.patterns.uishell.model.ApplicationsMenuModel.setSource(ApplicationsMenuModel.java:177)  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  at

I am trying to format it in my javascript before displaying on UI. The idea is simple: just replace all the

<space>at

with

<br/>at

I have tried various options like:

var trace = (d.MsgDetails).replace(new RegExp('\sat','g'),'</p><p>at');

or

var trace = (d.MsgDetails).replace(new RegExp(' at','g'),'</p><p>at');

or

 var trace = (d.MsgDetails).replace(/at/g),'</p><p>at');

or

 var trace = (d.MsgDetails).replace(/ at/g),'</p><p>at');

and nothing works. I am hoping the space which it looks is really a space. removing the space works fine but that is not what i want as it will break good words too.

Ry- · Accepted Answer · 2017-03-31 02:02:06Z

1

The character before “at” is a tab, so:

var trace = d.MsgDetails.replace(/\tat/g, '</p><p>at');

(Your first regular expression with \s would have worked if you had escaped \ in the string literal for an overall \\s; a string literal '\s' is equivalent to 's'. Don’t use the RegExp constructor to create static regular expressions.)

If there are in fact some newlines in there, a neater solution might be:

var traceLines = d.MsgDetails.split('\n');
var trace = document.createDocumentFragment();

traceLines.forEach(function (line) {
    trace.appendChild(document.createElement('p')).textContent = line;
});

edited Mar 31, 2017 at 2:02

answered Mar 31, 2017 at 1:58

Ry-♦

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2 Comments

nnnnnn Over a year ago

Doesn't \s match tabs? The OP's first attempt had /\sat/.

Ry- Over a year ago

@nnnnnn: Explanation added

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